LAM RESEARCH CORP
8-A12G, 1997-01-28
SPECIAL INDUSTRY MACHINERY, NEC
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                     SECURITIES AND EXCHANGE COMMISSION

                          Washington, D.C.  20549
                              ________________

                                  FORM 8-A

             FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES
                 PURSUANT TO SECTION 12(b) OR 12(g) OF THE
                      SECURITIES EXCHANGE ACT OF 1934
                              ________________

                          Lam Research Corporation
           (Exact name of registrant as specified in its charter)

                Delaware                         94-2634797
         (State of incorporation              (I.R.S. employer
            or organization)                identification no.)

                            4650 Cushing Parkway
                            Fremont, California

                  (Address of principal executive offices)

                                   94538
                                 (zip code)
                              ________________

     Securities to be registered pursuant to Section 12(b) of the Act:

                                           Name of each exchange
           Title of each class             on which each class is
            to be registered                 to be registered      

     Preferred Stock Purchase Rights   NASDAQ National Market System

     Securities to be registered pursuant to Section 12(g) of the Act:

                                    None

                         Exhibit Index is on Page 7


          ITEM 1.   DESCRIPTION OF REGISTRANT'S SECURITIES TO BE 
                    REGISTERED.

                    On January 23, 1997, the Board of Directors of Lam
          Research Corporation (the "Company") adopted a Shareholder
          Rights Plan, providing that one Right will be attached to
          each share of common stock, par value $0.001 per share, of
          the Company (the "Common Stock").  The Rights will be issued
          on January 31, 1997 and will entitle the registered holder
          to purchase from the Company a unit (a "Unit") consisting of
          one one-thousandth of a share of Series A Junior Participat-
          ing Preferred Stock, par value $0.001 per share (the "Pre-
          ferred Stock"), at a purchase price of $250 per Unit (the
          "Purchase Price"), subject to adjustment.  The description
          and terms of the Rights are set forth in the Rights Agree-
          ment (the "Rights Agreement"), dated as of January 23, 1997,
          between the Company and ChaseMellon Shareholder Services,
          L.L.C., a New Jersey limited liability company, as Rights
          Agent (the "Rights Agent").

                    Initially, the Rights will be attached to all
          Common Stock certificates representing shares then out-
          standing, and no separate Rights certificate will be
          distributed.  The Rights will separate from the Common
          Stock upon the earlier of (i) 10 business days following a
          public announcement that a person or group of affiliated
          or associated persons (an "Acquiring Person") has ac-
          quired, or obtained the right to acquire, beneficial
          ownership of 15% or more of the outstanding shares of
          Common Stock (the "Stock Acquisition Date") or (ii) 10
          business days following the commencement of a tender offer
          or exchange offer that would result in a person or group
          beneficially owning 15% or more of such outstanding shares
          of Common Stock (the earlier of (i) and (ii), the "Distri-
          bution Date").  Until the Distribution Date, (i) the
          Rights will be evidenced by the Common Stock certificates
          and will be transferred with and only with such Common
          Stock certificates, (ii) new Common Stock certificates
          will contain a notation incorporating the Rights Agreement
          by reference and (iii) the surrender for transfer of any
          certificates for Common Stock outstanding will also con-
          stitute the transfer of the Rights associated with the
          Common Stock represented by such certificate.

                    The Rights are not exercisable until the Distri-
          bution Date and will expire at the close of business on
          January 31, 2007, unless earlier redeemed by the Company,
          as described below.  At no time will the Rights have any
          voting power.

                    As soon as practicable after the Distribution
          Date, Rights certificates will be mailed to holders of
          record of the Common Stock as of the close of business on
          the Distribution Date and, thereafter, the separate Rights
          certificates alone will represent the Rights.  Except as
          otherwise determined by the Board of Directors of the
          Company, only shares of Common Stock outstanding prior to
          the Distribution Date will be issued with Rights. 

                    In the event that a person becomes an Acquiring
          Person (unless such acquisition is made pursuant to a
          tender or exchange offer for all outstanding shares of the
          Company, at a price and on terms determined by at least a
          majority of the directors of the Company who are not
          officers of the Company and who are not representatives,
          nominees, Affiliates or Associates of an Acquiring Person
          at a price that is not inadequate and otherwise in the
          best interests of the Company and its stockholders after
          receiving advice from one or more investment banking firms
          (a "Qualified Offer"), each holder of a Right will there-
          after have the right to receive, upon exercise, Common
          Stock (or, in certain circumstances, cash, property or
          other securities of the Company) having a value equal to
          twice the Exercise Price of the Right.  The Exercise Price
          is the Purchase Price times the number of shares of Common
          Stock associated with each Right (initially, one).  Not-
          withstanding any of the foregoing, following the occur-
          rence of any of the events set forth in this paragraph
          (the "Flip-in Events"), all Rights that are, or (under
          certain circumstances specified in the Rights Agreement)
          were, beneficially owned by any Acquiring Person will be
          null and void.  However, Rights are not exercisable fol-
          lowing the occurrence of any of the Flip-in Events set
          forth above until such time as the Rights are no longer
          redeemable by the Company, as set forth below.

                    In the event that following the Stock Acquisi-
          tion Date, (i) the Company engages in a merger or business
          combination transaction in which the Company is not the
          surviving corporation (other than a merger consummated
          pursuant to a Qualified Offer), (ii) the Company engages
          in a merger or business combination transaction in which
          the Company is the surviving corporation and the Common
          Stock is changed or exchanged or (iii) 50% or more of the
          Company's assets or earning power is sold or transferred,
          each holder of a Right (except Rights which have previous-
          ly been voided as set forth above) shall thereafter have
          the right to receive, upon exercise of the Right, common
          stock of the acquiring company having a value equal to
          twice the Exercise Price of the Right.

                    The Purchase Price payable and the number of
          Units of Preferred Stock or other securities or property
          issuable upon exercise of the Rights are subject to ad-
          justment from time to time to prevent dilution (i) in the
          event of a stock dividend on, or a subdivision, combina-
          tion or reclassification of, the Preferred Stock, (ii) if
          holders of the Preferred Stock are granted certain rights
          or warrants to subscribe for Preferred Stock or convert-
          ible securities at less than the current market price of
          the Preferred Stock or (iii) upon the distribution to
          holders of the Preferred Stock of evidences of indebted-
          ness or assets (excluding regular quarterly cash divi-
          dends) or of subscription rights or warrants (other than
          those referred to above).

                    With certain exceptions, no adjustments in the
          Purchase Price will be required until cumulative adjust-
          ments amount to at least 1% of the Purchase Price.  No
          fractional Units will be issued and, in lieu thereof, an
          adjustment in cash will be made based on the market price
          of the Preferred Stock on the last trading date prior to
          the date of exercise.

                    At any time until ten business days following
          the Stock Acquisition Date, the Company may redeem the
          Rights in whole, but not in part, at a price of $0.001 per
          Right.  Immediately upon the action of the Board of Direc-
          tors ordering redemption of the Rights, the Rights will
          terminate and the only right of the holders of Rights will
          be to receive the $0.001 redemption price.  Notwithstand-
          ing the foregoing, the Rights generally may not be re-
          deemed for 180 days following a change in a majority of
          the Board as a result of a proxy contest.

                    Until a Right is exercised, the holder thereof,
          as such, will have no rights as a stockholder of the
          Company, including, without limitation, the right to vote
          or to receive dividends.  While the distribution of the
          Rights will not be taxable to stockholders or to the
          Company, stockholders may, depending upon the circumstanc-
          es, recognize taxable income in the event that the Rights
          become exercisable for Common Stock (or other consider-
          ation) of the Company, as set forth above.

                    Other than those provisions relating to the
          principal economic terms of the Rights, any of the provi-
          sions of the Rights Agreement may be amended by the Board
          of Directors of the Company prior to the Distribution
          Date.  After the Distribution Date, the provisions of the
          Rights Agreement may be amended by the Board of Directors
          in order to cure any ambiguity, to correct or supplement
          any provision of the Rights Agreement that may be defec-
          tive or inconsistent with any other provision thereof, to
          make changes which do not adversely affect the interests
          of holders of Rights (other than an Acquiring Person), or
          to shorten or lengthen any time period under the Rights
          Agreement;  provided, however, that no amendment to adjust
          the time period governing redemption shall be made at such
          time as the Rights are not redeemable.

                    The Rights have certain anti-takeover effects. 
          The Rights will cause substantial dilution to a person or
          group that attempts to acquire the Company in certain
          circumstances.  Accordingly, the existence of the Rights
          may deter certain acquirors from making takeover proposals
          or tender offers.  The Rights, however, are not intended
          to prevent a takeover but rather are designed to enhance
          the ability of the Board of Directors to negotiate with a
          potential acquiror on behalf of all of the stockholders.  

                    The Rights Agreement between the Company and the
          Rights Agent specifying the terms of the Rights, which
          includes as Exhibit B the Form of Rights Certificate, is
          attached hereto as Exhibit 1 and is incorporated herein by
          reference.  The foregoing description of the Rights does
          not purport to be complete and is qualified in its entire-
          ty by reference to Exhibit 1 hereto.

          ITEM 2.   EXHIBITS.

                    1.  Rights Agreement, dated as of January 23,
          1997, between Lam Research Corporation and ChaseMellon
          Shareholder Services, L.L.C., as Rights Agent, which
          includes as Exhibit B thereto the Form of Rights Certifi-
          cate.


                                   SIGNATURE

                    Pursuant to the requirements of Section 12 of
          the Securities Exchange Act of 1934, the registrant has
          duly caused this registration statement to be signed on
          its behalf by the undersigned, thereto duly authorized.

                                   LAM RESEARCH CORPORATION

                                   By:  /s/ Henk J. Evenhuis 
                                       ______________________________
                                   Name:     Henk J. Evenhuis
                                   Title:    Executive Vice President,
                                             Finance & Chief Financial
                                             Officer

          Date:  January 28, 1997


                                  EXHIBIT INDEX

             Exhibit     Description                             Page

                1        Rights Agreement, dated as of January    8
                         23, 1997, between Lam Research Corpo-
                         ration and ChaseMellon Shareholder
                         Services, L.L.C., as Rights Agent,
                         which includes as Exhibit B thereto
                         the Form of Rights Certificate.





                           Lam Research Corporation

                                     and

                  ChaseMellon Shareholder Services, L.L.C.,

                               as Rights Agent

                                                 

                               Rights Agreement

                         Dated as of January 23, 1997


                              TABLE OF CONTENTS

          Section                                              Page

             1.  Certain Definitions . . . . . . . . . . . .    1

             2.  Appointment of Rights Agent . . . . . . . .    6

             3.  Issuance of Rights Certificates . . . . . .    7

             4.  Form of Rights Certificates . . . . . . . .    9

             5.  Countersignature and Registration . . . . .   10

             6.  Transfer, Split Up, Combination and Ex-
                  change of Rights Certificates; Mutilated,
                  Destroyed, Lost or Stolen Rights Certifi-
                  cates  . . . . . . . . . . . . . . . . . .   11

             7.  Exercise of Rights; Purchase Price; Expira-
                  tion Date of Rights  . . . . . . . . . . .   12

             8.  Cancellation and Destruction of Rights
                  Certificates . . . . . . . . . . . . . . .   15

             9.  Reservation and Availability of Capital
                  Stock  . . . . . . . . . . . . . . . . . .   15

             10.  Preferred Stock Record Date  . . . . . . .   17

             11.  Adjustment of Purchase Price, Number and
                  Kind of Shares or Number of Rights . . . .   18

             12.  Certificate of Adjusted Purchase Price or
                  Number of Shares . . . . . . . . . . . . .   30

             13.  Consolidation, Merger or Sale or Transfer
                  of Assets or Earning Power . . . . . . . .   31

             14.  Fractional Rights and Fractional Shares  .   34

             15.  Rights of Action . . . . . . . . . . . . .   36

             16.  Agreement of Rights Holders  . . . . . . .   37

             17.  Rights Certificate Holder Not Deemed a
                  Stockholder  . . . . . . . . . . . . . . .   38

             18.  Concerning the Rights Agent  . . . . . . .   38

             19.  Merger or Consolidation or Change of Name
                  of Rights Agent  . . . . . . . . . . . . .   39

             20.  Duties of Rights Agent . . . . . . . . . .   40

             21.  Change of Rights Agent . . . . . . . . . .   43

             22.  Issuance of New Rights Certificates  . . .   44

             23.  Redemption and Termination . . . . . . . .   45

             24.  Exchange . . . . . . . . . . . . . . . . .   46

             25.  Notice of Certain Events . . . . . . . . .   48

             26.  Notices  . . . . . . . . . . . . . . . . .   49

             27.  Supplements and Amendments . . . . . . . .   50

             28.  Successors . . . . . . . . . . . . . . . .   50

             29.  Determinations and Actions by the Board,
                  etc. . . . . . . . . . . . . . . . . . . .   51

             30.  Benefits of this Agreement . . . . . . . .   51

             31.  Severability . . . . . . . . . . . . . . .   51

             32.  Governing Law  . . . . . . . . . . . . . .   52

             33.  Counterparts . . . . . . . . . . . . . . .   52

             34.  Descriptive Headings . . . . . . . . . . .   52

          Exhibit A --   Form of Certificate of Designation, Preferences
                         and Rights

          Exhibit B --   Form of Rights Certificate

          Exhibit C --   Summary of Rights to Purchase Preferred Stock


                                   RIGHTS AGREEMENT

                    RIGHTS AGREEMENT, dated as of January 23, 1997 (this
          "Agreement"), between Lam Research Corporation, a Delaware
          corporation (the "Company"), and ChaseMellon Shareholder Servic-
          es, L.L.C., a New Jersey limited liability company, as rights
          agent (the "Rights Agent"),

                                 W I T N E S S E T H

                    WHEREAS, on January 23, 1997 (the "Rights Dividend
          Declaration Date"), the Board of Directors of the Company (the
          "Board") authorized and declared a dividend distribution of one
          Right for each share of Common Stock of the Company outstanding
          at the close of business on January 31, 1997 (the "Record Date"),
          and has authorized the issuance of one Right (as such number may
          hereinafter be adjusted pursuant to the provisions of Section
          11(p) hereof) for each share of Common Stock issued between the
          Record Date (whether originally issued or delivered from the
          Company's treasury) and the Distribution Date (as defined below),
          each Right initially representing the right to purchase one
          one-thousandth of a share of Series A Junior Participating
          Preferred Stock of the Company having the rights, powers and
          preferences set forth in the form of Certificate of Designation,
          Preferences and Rights attached hereto as Exhibit A, upon the
          terms and subject to the conditions set forth below (the
          "Rights"). 

                    NOW, THEREFORE, in consideration of the premises and
          the mutual agreements herein set forth, the parties hereby agree
          as follows: 

                    Section 1.  Certain Definitions.  For purposes of this
          Agreement, the following terms have the meanings indicated: 

                         (a)  "Acquiring Person" shall mean any Person who
          or which, together with all Affiliates and Associates of such
          Person, shall be the Beneficial Owner of fifteen percent (15%) or
          more of the shares of Common Stock then outstanding, but shall
          not include (i) the Company, (ii) any Subsidiary of the Company,
          (iii) any employee benefit plan of the Company or of any Subsid-
          iary of the Company, (iv) any Person or entity organized, ap-
          pointed or established by the Company for or pursuant to the
          terms of any such plan or (v) any Exempted Person.

                         (b)  "Act" shall mean the Securities Act of 1933,
          as amended.

                         (c)  "Adjustment Shares" shall have the meaning
          set forth in Section 11(a)(ii) hereof.

                         (d)  "Affiliate" and "Associate" shall have the
          respective meanings ascribed to such terms in Rule 12b-2 of the
          General Rules and Regulations under the Exchange Act. 

                         (e)  A Person shall be deemed the "Beneficial
          Owner" of, and shall be deemed to "beneficially own," any securi-
          ties: 

                              (i)  which such Person or any of such
               Person's Affiliates or Associates, directly or indi-
               rectly, has the right to acquire (whether such right is
               exercisable immediately or only after the passage of
               time) pursuant to any agreement, arrangement or
               understanding (whether or not in writing) or upon the
               exercise of conversion rights, exchange rights, rights,
               warrants or options, or otherwise; provided, however,
               that a Person shall not be deemed the "Beneficial
               Owner" of, or to "beneficially own," (A) securities
               tendered pursuant to a tender or exchange offer made by
               such Person or any of such Person's Affiliates or
               Associates until such tendered securities are accepted
               for purchase or exchange, (B) securities issuable upon
               exercise of Rights at any time prior to the occurrence
               of a Triggering Event or (C) securities issuable upon
               exercise of Rights from and after the occurrence of a
               Triggering Event which Rights were acquired by such
               Person or any of such Person's Affiliates or Associates
               prior to the Distribution Date or pursuant to Section
               3(a) or Section 22 hereof (the "Original Rights") or
               pursuant to Section 11(i) hereof in connection with an
               adjustment made with respect to any Original Rights; 

                         (ii)  which such Person or any of such
               Person's Affiliates or Associates, directly or indi-
               rectly, has the right to vote or dispose of or has
               "beneficial ownership" of (as determined pursuant to
               Rule 13d-3 of the General Rules and Regulations under
               the Exchange Act), including pursuant to any agreement,
               arrangement or understanding, whether or not in writ-
               ing; provided, however, that a Person shall not be
               deemed the "Beneficial Owner" of, or to "beneficially
               own," any security under this subsection (ii) as a
               result of an agreement, arrangement or understanding to
               vote such security if such agreement, arrangement or
               understanding:  (A) arises solely from a revocable
               proxy given in response to a public proxy or consent
               solicitation made pursuant to, and in accordance with,
               the applicable provisions of the General Rules and
               Regulations under the Exchange Act, and (B) is not also
               then reportable by such Person on Schedule 13D under
               the Exchange Act (or any comparable or successor re-
               port); or 

                         (iii)  which are beneficially owned, directly
               or indirectly, by any other Person (or any Affiliate or
               Associate thereof) with which such Person (or any of
               such Person's Affiliates or Associates) has any agree-
               ment, arrangement or understanding (whether or not in
               writing), for the purpose of acquiring, holding, voting
               (except pursuant to a revocable proxy as described in
               the proviso to subsection (ii) of this subsection (e))
               or disposing of any voting securities of the Company;

          provided, however, that nothing in this subsection (e) shall
          cause a Person engaged in business as an underwriter of securi-
          ties to be the "Beneficial Owner" of, or to "beneficially own,"
          any securities acquired through such Person's participation in
          good faith in a firm commitment underwriting until the expiration
          of forty days after the date of such acquisition; and provided
          further, however, that any stockholder of the Company, with
          affiliate(s), associate(s) or other Person(s) who may be deemed
          representatives of it serving as director(s) of the Company,
          shall not be deemed to beneficially own securities held by other
          Persons as a result of (i) Persons affiliated or otherwise
          associated with such stockholder serving as directors or taking
          any action in connection therewith, (ii) discussing the status of
          its shares with the Company or other stockholders of the Company
          similarly situated or (iii) voting or acting in a manner similar
          to other stockholders similarly situated, absent a specific
          finding by the Board of an express agreement among such stock-
          holders to act in concert with one another as stockholders so as
          to cause, in the good faith judgment of the Board, each such
          stockholder to be the Beneficial Owner of the shares held by such
          other stockholder(s). 

                         (f)  "Board" shall have the meaning set forth in
          the recital at the beginning of this Agreement.

                         (g)  "Business Day" shall mean any day other than
          a Saturday, Sunday or a day on which banking institutions in the
          State of New York are authorized or obligated by law or executive
          order to close.

                         (h)  "Close of business" on any given date shall
          mean 5:00 P.M., New York City time, on such date; provided,
          however, that if such date is not a Business Day it shall mean
          5:00 P.M., New York City time, on the next succeeding Business
          Day. 

                         (i)  "Common Stock" shall mean the common stock,
          par value $.001 per share, of the Company, except that "Common
          Stock" when used with reference to any Person other than the
          Company shall mean the capital stock of such Person with the
          greatest voting power, or the equity securities or other equity
          interest having power to control or direct the management, of
          such Person. 

                         (j)  "Common Stock Equivalents" shall have the
          meaning set forth in Section 11(a)(iii) hereof.

                         (k)  "Current Market Price" shall have the meaning
          set forth in Section 11(d)(i) hereof.

                         (l)  "Current Value" shall have the meaning set
          forth in Section 11(a)(iii) hereof.

                         (m)  "Distribution Date" shall have the meaning
          set forth in Section 3(a) hereof.

                         (n)  "Equivalent Preferred Stock" shall have the
          meaning set forth in Section 11(b) hereof.

                         (o)  "Exchange Act" shall mean the Securities
          Exchange Act of 1934, as amended and in effect on the date of
          this Agreement.

                         (p)  "Exchange Ratio" shall have the meaning set
          forth in Section 24(a) hereof.

                         (q)  "Exempted Person" shall mean any Person who
          (i) is the Beneficial Owner, on the date hereof, of securities
          representing fifteen percent (15%) or more of the shares of
          Common Stock outstanding on the date hereof, and such Person's
          Affiliates and Associates or, (ii) becomes, after the date
          hereof, the Beneficial Owner of securities representing fifteen
          percent (15%) or more of the outstanding shares of Common Stock
          as a result of a Qualified Offer.

                         (r)  "Expiration Date" shall have the meaning set
          forth in Section 7(a) hereof.

                         (s)  "Final Expiration Date" shall mean the close
          of business on January 31, 2007.

                         (t)  "NASDAQ" shall have the meaning set forth in
          Section 11(d)(i) hereof.

                         (u)  "Person" shall mean any individual, firm
          corporation, partnership or other entity. 

                         (v)  "Preferred Stock" shall mean shares of Series
          A Junior Participating Preferred Stock, par value $.001 per
          share, of the Company and, to the extent that there are not a
          sufficient number of shares of Series A Junior Participating
          Preferred Stock authorized to permit the full exercise of the
          Rights, any other series of preferred stock of the Company
          designated for such purpose containing terms substantially
          similar to the terms of the Series A Junior Participating Pre-
          ferred Stock. 

                         (w)  "Principal Party" shall have the meaning set
          forth in Section 13(b) hereof.

                         (x)  "Purchase Price" shall have the meaning set
          forth in Section 4(a) hereof.

                         (y)  "Qualified Offer" shall have the meaning set
          forth in Section 11(a)(ii) hereof.

                         (z)  "Record Date" shall have the meaning set
          forth in the recital at the beginning of this Agreement.

                         (aa)  "Redemption Price" shall have the meaning
          set forth in Section 23(a) hereof.

                         (ab)  "Rights" shall have the meaning set forth in
          the recital at the beginning of this Agreement.

                         (ac)  "Rights Agent" shall have the meaning set
          forth in the introductory paragraph of this Agreement.

                         (ad)  "Rights Certificate(s)" shall have the
          meaning set forth in Section 3(a) hereof.

                         (ae)  "Rights Dividend Declaration Date" shall
          have the meaning set forth in the recital at the beginning of
          this Agreement.

                         (af)  "Section 11(a)(ii) Event" shall mean any
          event described in Section 11(a)(ii) hereof. 

                         (ag)  "Section 11(a)(ii) Trigger Date" shall have
          the meaning set forth in Section 11(a)(iii) hereof. 

                         (ah)  "Section 13 Event" shall mean any event
          described in clauses (x), (y) or (z) of Section 13(a) hereof. 

                         (ai)  "Spread" shall have the meaning set forth in
          Section 11(a)(iii) hereof.

                         (aj)  "Stock Acquisition Date" shall mean the
          first date of public announcement (which, for purposes of this
          definition, shall include, without limitation, a report filed
          pursuant to Section 13(d) under the Exchange Act) by the Company
          or an Acquiring Person that an Acquiring Person has become such
          other than pursuant to a Qualified Offer. 

                         (ak)  "Subsidiary" shall mean, with reference to
          any Person, any corporation of which an amount of voting securi-
          ties sufficient to elect at least a majority of the directors of
          such corporation is beneficially owned, directly or indirectly,
          by such Person, or otherwise controlled by such Person. 

                         (al)  "Substitution Period" shall have the meaning
          set forth in Section 11(a)(iii) hereof.

                         (am)  "Summary of Rights" shall have the meaning
          set forth in Section 3(b) hereof.

                         (an)  "Trading Day" shall have the meaning set
          forth in Section 11(d)(i) hereof.

                         (ao)  "Triggering Event" shall mean any Section
          11(a)(ii) Event or any Section 13 Event. 

                    Section 2.  Appointment of Rights Agent.  The Company
          hereby appoints the Rights Agent to act as agent for the Company
          in accordance with the terms and conditions hereof, and the Rights 
          Agent hereby accepts such appointment.  The Company may from time 
          to time appoint such co-rights agents as it may deem necessary or 
          desirable. 

                    Section 3.  Issuance of Rights Certificates.

                         (a)  Until the earlier of (i) the close of busi-
          ness on the tenth Business Day after the Stock Acquisition Date
          (or, if the tenth Business Day after the Stock Acquisition Date
          occurs before the Record Date, the close of business on the
          Record Date), or (ii) the close of business on the tenth Business
          Day (or such later date as the Board shall determine) after the
          date that a tender or exchange offer by any Person (other than
          the Company, any Subsidiary of the Company, any employee benefit
          plan of the Company or of any Subsidiary of the Company, or any
          Person or entity organized, appointed or established by the
          Company for or pursuant to the terms of any such plan) is first
          published or sent or given within the meaning of Rule 14d-2(a) of
          the General Rules and Regulations under the Exchange Act, if upon
          consummation thereof, such Person would become an Acquiring
          Person (the earlier of (i) and (ii) being herein referred to as
          the "Distribution Date"), (x) the Rights will be evidenced
          (subject to the provisions of subsection (b) of this Section 3)
          by the certificates for the Common Stock registered in the names
          of the holders of the Common Stock (which certificates for Common
          Stock shall be deemed also to be certificates for Rights) and not
          by separate certificates, and (y) the Rights will be transferable
          only in connection with the transfer of the underlying shares of
          Common Stock (including a transfer to the Company).  As soon as
          practicable after the Distribution Date, the Rights Agent will
          send by first-class, insured, postage prepaid mail, to each
          record holder of the Common Stock as of the close of business on
          the Distribution Date, at the address of such holder shown on the
          records of the Company, one or more right certificates, in
          substantially the form of Exhibit B hereto (the "Rights Certifi-
          cates"), evidencing one Right for each share of Common Stock so
          held, subject to adjustment as provided herein.  In the event
          that an adjustment in the number of Rights per share of Common
          Stock has been made pursuant to Section 11(p) hereof, at the time
          of distribution of the Rights Certificates, the Company shall
          make the necessary and appropriate rounding adjustments (in
          accordance with Section 14(a) hereof) so that Rights Certificates
          representing only whole numbers of Rights are distributed and
          cash is paid in lieu of any fractional Rights.  As of and after
          the Distribution Date, the Rights will be evidenced solely by
          such Rights Certificates. 

                         (b)  The Company shall make available a copy of a
          summary of the Rights, in substantially the form attached hereto
          as Exhibit C (the "Summary of Rights"), to any holder of Rights
          who may so request from time to time prior to the Expiration
          Date.  With respect to certificates for the Common Stock out-
          standing as of the Record Date, until the Distribution Date, the
          Rights will be evidenced by such certificates for the Common
          Stock and the registered holders of the Common Stock shall also
          be the registered holders of the associated Rights.  Until the
          earlier of the Distribution Date or the Expiration Date, the
          transfer of any certificates representing shares of Common Stock
          in respect of which Rights have been issued shall also constitute
          the transfer of the Rights associated with such shares of Common
          Stock. 

                         (c)  Rights shall be issued in respect of all
          shares of Common Stock which are issued (whether originally
          issued or from the Company's treasury) after the Record Date but
          prior to the earlier of the Distribution Date or the Expiration
          Date.  Certificates representing such shares of Common Stock
          shall also be deemed to be certificates for Rights and shall bear
          the following legend:

                    This certificate also evidences and entitles the
               holder hereof to certain Rights as set forth in the
               Rights Agreement between Lam Research Corporation (the
               "Company") and the Rights Agent thereunder (the "Rights
               Agreement"), the terms of which are hereby incorporated
               herein by reference and a copy of which is on file at
               the principal offices of the Company.  Under certain
               circumstances, as set forth in the Rights Agreement,
               such Rights will be evidenced by separate certificates
               and will no longer be evidenced by this certificate. 
               The Company will mail to the holder of this certificate
               a copy of the Rights Agreement, as in effect on the
               date of mailing, without charge, promptly after receipt
               of a written request therefor.  Under certain circum-
               stances set forth in the Rights Agreement, Rights
               issued to, or held by, any Person who is, was or be-
               comes an Acquiring Person or any Affiliate or Associate
               thereof (as such terms are defined in the Rights Agree-
               ment), whether currently held by or on behalf of such
               Person or by any subsequent holder, may become null and
               void.

          With respect to such certificates containing the foregoing
          legend, until the earlier of (i) the Distribution Date or (ii)
          the Expiration Date, the Rights associated with the Common Stock
          represented by such certificates shall be evidenced by such
          certificates alone and registered holders of Common Stock shall
          also be the registered holders of the associated Rights, and the
          transfer of any of such certificates shall also constitute the
          transfer of the Rights associated with the Common Stock repre-
          sented by such certificates.

                    Section 4.  Form of Rights Certificates.

                         (a)  The Rights Certificates (and the forms of
          election to purchase and of assignment to be printed on the
          reverse thereof) shall each be substantially in the form set
          forth in Exhibit B hereto and may have such marks of identifica-
          tion or designation and such legends, summaries or endorsements
          printed thereon as the Company may deem appropriate and as are
          not inconsistent with the provisions of this Agreement, or as may
          be required to comply with any applicable law or with any rule or
          regulation made pursuant thereto or with any rule or regulation
          of any stock exchange on which the Rights may from time to time
          be listed, or to conform to usage.  Subject to the provisions of
          Section 11 and Section 22 hereof, the Rights Certificates,
          whenever distributed, shall be dated as of the Record Date and on
          their face shall entitle the holders thereof to purchase such
          number of one one-thousandths of a share of Preferred Stock as
          shall be set forth therein at the price set forth therein (such
          exercise price per one one-thousandth of a share, the "Purchase
          Price"), but the amount and type of securities purchasable upon
          the exercise of each Right and the Purchase Price thereof shall
          be subject to adjustment as provided herein. 

                         (b)  Any Rights Certificate issued pursuant to
          Section 3(a), Section 11(i) or Section 22 hereof that represents
          Rights beneficially owned by:  (i) an Acquiring Person or any
          Associate or Affiliate of an Acquiring Person, (ii) a transferee
          of an Acquiring Person (or of any such Associate or Affiliate)
          who becomes a transferee after the Acquiring Person becomes such,
          or (iii) a transferee of an Acquiring Person (or of any such
          Associate or Affiliate) who becomes a transferee prior to or
          concurrently with the Acquiring Person becoming such and receives
          such Rights pursuant to either (A) a transfer (whether or not for
          consideration) from the Acquiring Person to holders of equity
          interests in such Acquiring Person or to any Person with whom
          such Acquiring Person has any continuing agreement, arrangement
          or understanding regarding the transferred Rights or (B) a
          transfer which the Board has determined is part of a plan,
          arrangement or understanding which has as a primary purpose or
          effect avoidance of Section 7(e) hereof, and any Rights Certifi-
          cate issued pursuant to Section 6 or Section 11 hereof upon
          transfer, exchange, replacement or adjustment of any other Rights
          Certificate referred to in this sentence, shall contain (to the
          extent feasible) the following legend:

               The Rights represented by this Rights Certificate are
               or were beneficially owned by a Person who was or
               became an Acquiring Person or an Affiliate or Associate
               of an Acquiring Person (as such terms are defined in
               the Rights Agreement).  Accordingly, this Rights Cer-
               tificate and the Rights represented hereby may become
               null and void in the circumstances specified in Section
               7(e) of the Rights Agreement.

                    Section 5.  Countersignature and Registration.

                         (a)  The Rights Certificates shall be executed on
          behalf of the Company by its Chairman of the Board, its President
          or any Vice President, either manually or by facsimile signature,
          and shall have affixed thereto the Company's seal or a facsimile
          thereof which shall be attested by the Secretary or an Assistant
          Secretary of the Company, either manually or by facsimile signa-
          ture.  The Rights Certificates shall be countersigned by the
          Rights Agent, either manually or by facsimile signature, and
          shall not be valid for any purpose unless so countersigned.  In
          case any officer of the Company who shall have signed any of the
          Rights Certificates shall cease to be such officer of the Company
          before countersignature by the Rights Agent and issuance and
          delivery by the Company, such Rights Certificates, nevertheless,
          may be countersigned by the Rights Agent and issued and delivered
          by the Company with the same force and effect as though the
          Person who signed such Rights Certificates had not ceased to be
          such officer of the Company; and any Rights Certificates may be
          signed on behalf of the Company by any Person who, at the actual
          date of the execution of such Rights Certificate, shall be a
          proper officer of the Company to sign such Rights Certificate,
          although at the date of the execution of this Rights Agreement
          any such Person was not such an officer. 

                         (b)  Following the Distribution Date, the Rights
          Agent will keep or cause to be kept, at its principal office or
          offices designated as the appropriate place for surrender of
          Rights Certificates upon exercise or transfer, books for regis-
          tration and transfer of the Rights Certificates issued hereunder. 
          Such books shall show the names and addresses of the respective
          holders of the Rights Certificates, the number of Rights evi-
          denced on its face by each of the Rights Certificates and the
          date of each of the Rights Certificates. 

                    Section 6.  Transfer, Split Up, Combination and Ex-
          change of Rights Certificates; Mutilated, Destroyed, Lost or
          Stolen Rights Certificates.  

                         (a)  Subject to the provisions of Section 4(b),
          Section 7(e) and Section 14 hereof, at any time after the close
          of business on the Distribution Date, and at or prior to the
          close of business on the Expiration Date, any Rights Certificate
          or Certificates (other than Rights Certificates representing
          Rights that have been exchanged pursuant to Section 24 hereof)
          may be transferred, split up, combined or exchanged for another
          Rights Certificate or Rights Certificates entitling the regis-
          tered holder to purchase a like number of one one-thousandths of
          a share of Preferred Stock (or, following a Triggering Event,
          Common Stock, other securities, cash or other assets, as the case
          may be) as the Rights Certificate or Certificates surrendered
          then entitles such holder (or former holder in the case of a
          transfer) to purchase.  Any registered holder desiring to trans-
          fer, split up, combine or exchange any Rights Certificate or
          Certificates shall make such request in writing delivered to the
          Rights Agent, and shall surrender the Rights Certificate or
          Certificates to be transferred, split up, combined or exchanged
          at the principal office or offices of the Rights Agent designated
          for such purpose.  Neither the Rights Agent nor the Company shall
          be obligated to take any action whatsoever with respect to the
          transfer of any such surrendered Rights Certificate until the
          registered holder shall have completed and signed the certificate
          contained in the form of assignment on the reverse side of such
          Rights Certificate and shall have provided such additional
          evidence of the identity of the Beneficial Owner (or former
          Beneficial Owner) or Affiliates or Associates thereof as the
          Company shall reasonably request.  Thereupon the Rights Agent
          shall, subject to Section 4(b), Section 7(e), Section 14 and
          Section 24 hereof, countersign and deliver to the Person entitled
          thereto a Rights Certificate or Rights Certificates, as the case
          may be, as so requested.  The Company may require payment of a
          sum sufficient to cover any tax or governmental charge that may
          be imposed in connection with any transfer, split up, combination
          or exchange of Rights Certificates. 

                         (b)  Upon receipt by the Company and the Rights
          Agent of evidence reasonably satisfactory to them of the loss,
          theft, destruction or mutilation of a Rights Certificate, and, in
          case of loss, theft or destruction, of indemnity or security
          reasonably satisfactory to them, and reimbursement to the Company
          and the Rights Agent of all reasonable expenses incidental
          thereto, and upon surrender to the Rights Agent and cancellation
          of the Rights Certificate if mutilated, the Company will execute
          and deliver a new Rights Certificate of like tenor to the Rights
          Agent for countersignature and delivery to the registered owner
          in lieu of the Rights Certificate so lost, stolen, destroyed or
          mutilated. 

                    Section 7.  Exercise of Rights; Purchase Price;
          Expiration Date of Rights.  (a)  Subject to Section 7(e)
          hereof, at any time after the Distribution Date the
          registered holder of any Rights Certificate may exercise
          the Rights evidenced thereby (except as otherwise provid-
          ed herein including, without limitation, the restrictions
          on exercisability set forth in Section 9(c), Section
          11(a)(iii) and Section 23(a) hereof) in whole or in part
          upon surrender of the Rights Certificate, with the form
          of election to purchase and the certificate on the re-
          verse side thereof duly executed, to the Rights Agent at
          the principal office or offices of the Rights Agent
          designated for such purpose, together with payment of the
          aggregate Purchase Price with respect to the total number
          of one one-thousandths of a share (or other securities,
          cash or other assets, as the case may be) as to which
          such surrendered Rights are then exercisable, at or prior
          to the earliest of (i) the close of business on January
          31, 2007 (the "Final Expiration Date"), (ii) the time at
          which the Rights are redeemed as provided in Section 23
          hereof or (iii) the time at which the Rights are ex-
          changed pursuant to Section 24 hereof (the earliest of
          (i), (ii) and (iii) being referred to herein as the
          "Expiration Date"). 

                         (b)  The Purchase Price for each one
          one-thousandth of a share of Preferred Stock pursuant to
          the exercise of a Right shall initially be $250, and
          shall be subject to adjustment from time to time as
          provided in Section 11 and Section 13(a) hereof and shall
          be payable in accordance with subsection (c) below. 

                         (c)  Upon receipt of a Rights Certificate
          representing exercisable Rights, with the form of elec-
          tion to purchase and the certificate duly completed and
          executed, accompanied by payment, with respect to each
          Right so exercised, of the Purchase Price per one
          one-thousandth of a share of Preferred Stock (or other
          shares, securities, cash or other assets, as the case may
          be) to be purchased as set forth below and an amount
          equal to any applicable transfer tax, the Rights Agent
          shall, subject to Section 20(k) hereof, thereupon prompt-
          ly (i) (A) requisition from any transfer agent of the
          shares of Preferred Stock (or make available, if the
          Rights Agent is the transfer agent for such shares)
          certificates for the total number of one one-thousandths
          of a share of Preferred Stock to be purchased and the
          Company hereby irrevocably authorizes its transfer agent
          to comply with all such requests, or (B) if the Company
          shall have elected to deposit the total number of shares
          of Preferred Stock issuable upon exercise of the Rights
          hereunder with a depositary agent, requisition from the
          depositary agent depositary receipts representing such
          number of one one-thousandths of a share of Preferred
          Stock as are to be purchased (in which case certificates
          for the shares of Preferred Stock represented by such
          receipts shall be deposited by the transfer agent with
          the depositary agent) and the Company will direct the
          depositary agent to comply with such request, (ii) requi-
          sition from the Company the amount of cash, if any, to be
          paid in lieu of fractional shares in accordance with
          Section 14 hereof, (iii) after receipt of such certifi-
          cates or depositary receipts, cause the same to be deliv-
          ered to or upon the order of the registered holder of
          such Rights Certificate, registered in such name or names
          as may be designated by such holder, and (iv) after
          receipt thereof, deliver such cash, if any, to or upon
          the order of the registered holder of such Rights Certif-
          icate.  The payment of the Purchase Price (as such amount
          may be reduced pursuant to Section 11(a)(iii) hereof)
          shall be made in cash or by certified bank check or bank
          draft payable to the order of the Company or by such
          other means of payment as will be acceptable to the
          Company.  In the event that the Company is obligated to
          issue other securities (including Common Stock) of the
          Company, pay cash and/or distribute other property pursu-
          ant to Section 11(a) hereof, the Company will make all
          arrangements necessary so that such other securities,
          cash and/or other property are available for distribution
          by the Rights Agent, if and when appropriate.  The Compa-
          ny reserves the right to require prior to the occurrence
          of a Triggering Event that, upon any exercise of Rights,
          a number of Rights be exercised so that only whole shares
          of Preferred Stock would be issued. 

                         (d)  In case the registered holder of any
          Rights Certificate shall exercise less than all the
          Rights evidenced thereby, a new Rights Certificate
          evidencing Rights equivalent to the Rights remaining
          unexercised shall be issued by the Rights Agent and
          delivered to, or upon the order of, the registered holder
          of such Rights Certificate, registered in such name or
          names as may be designated by such holder, subject to the
          provisions of Section 14 hereof. 

                         (e)  Notwithstanding anything in this
          Agreement to the contrary, from and after the first
          occurrence of a Section 11(a)(ii) Event, any Rights
          beneficially owned by (i) an Acquiring Person or an
          Associate or Affiliate of an Acquiring Person, (ii) a
          transferee of an Acquiring Person (or of any such Associ-
          ate or Affiliate) who becomes a transferee after the
          Acquiring Person becomes such, or (iii) a transferee of
          an Acquiring Person (or of any such Associate or Affili-
          ate) who becomes a transferee prior to or concurrently
          with the Acquiring Person becoming such and receives such
          Rights pursuant to either (A) a transfer (whether or not
          for consideration) from the Acquiring Person to holders
          of equity interests in such Acquiring Person or to any
          Person with whom the Acquiring Person has any continuing
          agreement, arrangement or understanding regarding the
          transferred Rights or (B) a transfer which the Board has
          determined is part of a plan, arrangement or understand-
          ing which has as a primary purpose or effect the avoid-
          ance of this Section 7(e), shall become null and void
          without any further action and no holder of such Rights
          shall have any rights whatsoever with respect to such
          Rights, whether under any provision of this Agreement or
          otherwise.  The Company shall use all reasonable efforts
          to insure that the provisions of this Section 7(e) and
          Section 4(b) hereof are complied with, but shall have no
          liability to any holder of Rights Certificates or other
          Person as a result of its failure to make any determina-
          tions with respect to an Acquiring Person or its Affili-
          ates, Associates or transferees hereunder. 

                         (f)  Notwithstanding anything in this
          Agreement to the contrary, neither the Rights Agent nor
          the Company shall be obligated to undertake any action
          with respect to a registered holder upon the occurrence
          of any purported exercise as set forth in this Section 7
          unless such registered holder shall have (i) completed
          and signed the certificate contained in the form of
          election to purchase set forth on the reverse side of the
          Rights Certificate surrendered for such exercise, and
          (ii) provided such additional evidence of the identity of
          the Beneficial Owner (or former Beneficial Owner) or
          Affiliates or Associates thereof as the Company shall
          reasonably request. 

                    Section 8.  Cancellation and Destruction of
          Rights Certificates.  All Rights Certificates surrendered
          for the purpose of exercise, transfer, split up, combina-
          tion or exchange shall, if surrendered to the Company or
          any of its agents, be delivered to the Rights Agent for
          cancellation or in cancelled form, or, if surrendered to
          the Rights Agent, shall be cancelled by it, and no Rights
          Certificates shall be issued in lieu thereof except as
          expressly permitted by any of the provisions of this
          Agreement.  The Company shall deliver to the Rights Agent
          for cancellation and retirement, and the Rights Agent
          shall so cancel and retire, any other Rights Certificate
          purchased or acquired by the Company otherwise than upon
          the exercise thereof.  The Rights Agent shall deliver all
          cancelled Rights Certificates to the Company, or shall,
          at the written request of the Company, destroy such
          cancelled Rights Certificates, and in such case shall
          deliver a certificate of destruction thereof to the
          Company. 

                    Section 9.  Reservation and Availability of
          Capital Stock.  (a)  The Company covenants and agrees
          that it will cause to be reserved and kept available out
          of its authorized and unissued shares of Preferred Stock
          (and, following the occurrence of a Triggering Event, out
          of its authorized and unissued shares of Common Stock
          and/or other securities or out of its authorized and
          issued shares held in its treasury), the number of shares
          of Preferred Stock (and, following the occurrence of a
          Triggering Event, Common Stock and/or other securities)
          that, as provided in this Agreement including Section
          11(a)(iii) hereof, will be sufficient to permit the
          exercise in full of all outstanding Rights. 

                         (b)  So long as the shares of Preferred
          Stock (and, following the occurrence of a Triggering
          Event, Common Stock and/or other securities) issuable and
          deliverable upon the exercise of the Rights may be listed
          on any national securities exchange, the Company shall
          use its best efforts to cause, from and after such time
          as the Rights become exercisable, all shares reserved for
          such issuance to be listed on such exchange upon official
          notice of issuance upon such exercise. 

                         (c)  The Company shall use its best ef-
          forts to (i) file, as soon as practicable following the
          earliest date after the first occurrence of a Section
          11(a)(ii) Event on which the consideration to be
          delivered by the Company upon exercise of the Rights has
          been determined in accordance with Section 11(a)(iii)
          hereof, a registration statement under the Act with
          respect to the securities purchasable upon exercise of
          the Rights on an appropriate form, (ii) cause such regis-
          tration statement to become effective as soon as practi-
          cable after such filing and (iii) cause such registration
          statement to remain effective (with a prospectus at all
          times meeting the requirements of the Act) until the
          earlier of (A) the date as of which the Rights are no
          longer exercisable for such securities and (B) the date
          of the expiration of the Rights.  The Company will also
          take such action as may be appropriate under, or to
          ensure compliance with, the securities or "blue sky" laws
          of the various states in connection with the
          exercisability of the Rights.  The Company may temporari-
          ly suspend, for a period of time not to exceed ninety
          (90) days after the date set forth in clause (i) of the
          first sentence of this Section 9(c), the exercisability
          of the Rights in order to prepare and file such registra-
          tion statement and permit it to become effective.  Upon
          any such suspension, the Company shall issue a public
          announcement stating that the exercisability of the
          Rights has been temporarily suspended, as well as a
          public announcement at such time as the suspension is no
          longer in effect.  In addition, if the Company shall
          determine that a registration statement is required
          following the Distribution Date, the Company may tempo-
          rarily suspend the exercisability of the Rights until
          such time as a registration statement has been declared
          effective.  Notwithstanding any provision of this Agree-
          ment to the contrary, the Rights shall not be exercisable
          in any jurisdiction if the requisite qualification in
          such jurisdiction will not have been obtained, the exer-
          cise thereof will not be permitted under applicable law
          or a registration statement will not have been declared
          effective. 

                         (d)  The Company covenants and agrees that
          it will take all such action as may be necessary to
          ensure that all one one-thousandths of a share of
          Preferred Stock (and, following the occurrence of a
          Triggering Event, Common Stock and/or other securities)
          delivered upon exercise of Rights shall, at the time of
          delivery of the certificates for such shares (subject to
          payment of the Purchase Price), be duly and validly
          authorized and issued and fully paid and nonassessable. 

                         (e)  The Company further covenants and
          agrees that it will pay when due and payable any and all
          federal and state transfer taxes and charges which may be
          payable in respect of the issuance or delivery of the
          Rights Certificates and of any certificates for a number
          of one one-thousandths of a share of Preferred Stock (or
          Common Stock and/or other securities, as the case may be)
          upon the exercise of Rights.  The Company shall not,
          however, be required to pay any transfer tax which may be
          payable in respect of any transfer or delivery of Rights
          Certificates to a Person other than, or the issuance or
          delivery of a number of one one-thousandths of a share of
          Preferred Stock (or Common Stock and/or other securities,
          as the case may be) in respect of a name other than that
          of, the registered holder of the Rights Certificates
          evidencing Rights surrendered for exercise or to issue or
          deliver any certificates for a number of one
          one-thousandths of a share of Preferred Stock (or Common
          Stock and/or other securities, as the case may be) in a
          name other than that of the registered holder upon the
          exercise of any Rights until such tax shall have been
          paid (any such tax being payable by the holder of such
          Rights Certificate at the time of surrender) or until it
          has been established to the Company's satisfaction that
          no such tax is due. 

                    Section 10.  Preferred Stock Record Date.  Each
          Person in whose name any certificate for a number of one
          one-thousandths of a share of Preferred Stock (or Common
          Stock and/or other securities, as the case may be) is
          issued upon the exercise of Rights shall for all purposes
          be deemed to have become the holder of record of such
          fractional shares of Preferred Stock (or Common Stock
          and/or other securities, as the case may be) represented
          thereby on, and such certificate shall be dated, the date
          upon which the Rights Certificate evidencing such Rights
          was duly surrendered and payment of the Purchase Price
          (and all applicable transfer taxes) was made; provided,
          however, that if the date of such surrender and payment
          is a date upon which the Preferred Stock (or Common Stock
          and/or other securities, as the case may be) transfer
          books of the Company are closed, such Person shall be
          deemed to have become the record holder of such shares
          (fractional or otherwise) on, and such certificate shall
          be dated, the next succeeding Business Day on which the
          Preferred Stock (or Common Stock and/or other securities,
          as the case may be) transfer books of the Company are
          open.  Prior to the exercise of the Rights evidenced
          thereby, the holder of a Rights Certificate shall not be
          entitled to any rights of a stockholder of the Company
          with respect to shares for which the Rights shall be
          exercisable, including, without limitation, the right to
          vote, to receive dividends or other distributions or to
          exercise any preemptive rights, and shall not be entitled
          to receive any notice of any proceedings of the Company,
          except as provided herein. 

                    Section 11.  Adjustment of Purchase Price,
          Number and Kind of Shares or Number of Rights.  The
          Purchase Price, the number and kind of shares covered by
          each Right and the number of Rights outstanding are
          subject to adjustment from time to time as provided in
          this Section 11. 

                              (a)(i)  In the event the Company
               shall at any time after the date of this
               Agreement (A) declare a dividend on the
               Preferred Stock payable in shares of Preferred
               Stock, (B) subdivide the outstanding Preferred
               Stock, (C) combine the outstanding Preferred
               Stock into a smaller number of shares or (D)
               issue any shares of its capital stock in a
               reclassification of the Preferred Stock
               (including any such reclassification in connec-
               tion with a consolidation or merger in which
               the Company is the continuing or surviving
               corporation), except as otherwise provided in
               this Section 11(a) and Section 7(e) hereof, the
               Purchase Price in effect at the time of the
               record date for such dividend or of the effec-
               tive date of such subdivision, combination or
               reclassification, and the number and kind of
               shares of Preferred Stock or capital stock, as
               the case may be, issuable on such date, shall
               be proportionately adjusted so that the holder
               of any Right exercised after such time shall be
               entitled to receive, upon payment of the Pur-
               chase Price then in effect, the aggregate num-
               ber and kind of shares of Preferred Stock or
               capital stock, as the case may be, which, if
               such Right had been exercised immediately prior
               to such date and at a time when the Preferred
               Stock transfer books of the Company were open,
               such holder would have owned upon such exercise
               and been entitled to receive by virtue of such
               dividend, subdivision, combination or reclassi-
               fication.  If an event occurs which would re-
               quire an adjustment under both this Section
               11(a)(i) and Section 11(a)(ii) hereof, the
               adjustment provided for in this Section
               11(a)(i) shall be in addition to, and shall be
               made prior to, any adjustment required pursuant
               to Section 11(a)(ii) hereof.  

                         (ii)  Subject to Section 24 hereof,
               in the event any Person shall, at any time
               after the Rights Dividend Declaration Date,
               become an Acquiring Person unless the event
               causing such Person to become an Acquiring
               Person is a transaction set forth in Section
               13(a) hereof, or is an acquisition of shares of
               Common Stock pursuant to a tender offer or an
               exchange offer for all outstanding shares of
               Common Stock at a price and on terms determined
               by at least a majority of the members of the
               Board who are not officers of the Company and
               who are not representatives, nominees, Affili-
               ates or Associates of an Acquiring Person,
               after receiving advice from one or more invest-
               ment banking firms, to be (a) at a price that
               is not inadequate (taking into account all
               factors that such members of the Board deem
               relevant including, without limitation, prices
               that could reasonably be achieved if the Compa-
               ny or its assets were sold on an orderly basis
               designed to realize maximum value) and (b)
               otherwise in the best interests of the Company
               and its stockholders (a "Qualified Offer"),
               then, promptly following the occurrence of such
               an event, proper provision shall be made so
               that each holder of a Right (except as provided
               below and in Section 7(e) hereof) shall there-
               after have the right to receive, upon exercise
               thereof at the then current Purchase Price in
               accordance with the terms of this Agreement, in
               lieu of a number of one one-thousandths of a
               share of Preferred Stock, such number of shares
               of Common Stock of the Company as shall equal
               the result obtained by (x) multiplying the then
               current Purchase Price by the then number of
               one one-thousandths of a share of Preferred
               Stock for which a Right was exercisable immedi-
               ately prior to the first occurrence of a Sec-
               tion 11(a)(ii) Event, and (y) dividing that
               product (which, following such first occur-
               rence, shall thereafter be referred to as the
               "Purchase Price" for each Right and for all
               purposes of this Agreement) by fifty percent
               (50%) of the Current Market Price per share of
               Common Stock on the date of such first occur-
               rence (such number of shares, the "Adjustment
               Shares").

                         (iii)  In the event that the number
               of shares of Common Stock that are authorized
               by the Company's Certificate of Incorporation
               but not outstanding or reserved for issuance
               for purposes other than upon exercise of the
               Rights are not sufficient to permit the exer-
               cise in full of the Rights in accordance with
               the foregoing subsection (ii) of this Section
               11(a), the Company shall (A) determine the
               value of the Adjustment Shares issuable upon
               the exercise of a Right (the "Current Value"),
               and (B) with respect to each Right (subject to
               Section 7(e) hereof), make adequate provision
               to substitute for the Adjustment Shares, upon
               the exercise of a Right and payment of the
               applicable Purchase Price, (1) cash, (2) a
               reduction in the Purchase Price, (3) Common
               Stock or other equity securities of the Company
               (including, without limitation, shares, or
               units of shares, of preferred stock, such as
               the Preferred Stock, which the Board has deemed
               to have essentially the same value or economic
               rights as shares of Common Stock (such shares
               of preferred stock, the "Common Stock Equiva-
               lents")), (4) debt securities of the Company,
               (5) other assets or (6) any combination of the
               foregoing, having an aggregate value equal to
               the Current Value (less the amount of any re-
               duction in the Purchase Price), where such
               aggregate value has been determined by the
               Board based upon the advice of a nationally
               recognized investment banking firm selected by
               the Board; provided, however, that if the Com-
               pany shall not have made adequate provision to
               deliver value pursuant to clause (B) above
               within thirty (30) days following the later of
               (x) the first occurrence of a Section 11(a)(ii)
               Event and (y) the date on which the Company's
               right of redemption pursuant to Section 23(a)
               expires (the later of (x) and (y) being re-
               ferred to herein as the "Section 11(a)(ii)
               Trigger Date"), then the Company shall be obli-
               gated to deliver, upon the surrender for exer-
               cise of a Right and without requiring payment
               of the Purchase Price, shares of Common Stock
               (to the extent available) and then, if neces-
               sary, cash, which shares and/or cash have an
               aggregate value equal to the Spread.  For pur-
               poses of the preceding sentence, the term
               "Spread" shall mean the excess of (i) the Cur-
               rent Value over (ii) the Purchase Price.  If
               the Board determines in good faith that it is
               likely that sufficient additional shares of
               Common Stock could be authorized for issuance
               upon exercise in full of the Rights, the thirty
               (30) day period set forth above may be extended
               to the extent necessary, but not more than
               ninety (90) days after the Section 11(a)(ii)
               Trigger Date, in order that the Company may
               seek stockholder approval for the authorization
               of such additional shares (such thirty (30) day
               period, as it may be extended, the "Substitu-
               tion Period").  To the extent that action is to
               be taken pursuant to the first and/or third
               sentences of this Section 11(a)(iii), the Com-
               pany (1) shall provide, subject to Section 7(e)
               hereof, that such action shall apply uniformly
               to all outstanding Rights and (2) may suspend
               the exercisability of the Rights until the
               expiration of the Substitution Period in order
               to seek such stockholder approval for such
               authorization of additional shares and/or to
               decide the appropriate form of distribution to
               be made pursuant to such first sentence and to
               determine the value thereof.  In the event of
               any such suspension, the Company shall issue a
               public announcement stating that the
               exercisability of the Rights has been tempo-
               rarily suspended, as well as a public announce-
               ment at such time as the suspension is no lon-
               ger in effect.  For purposes of this Section
               11(a)(iii), the value of each Adjustment Share
               shall be the Current Market Price per share of
               the Common Stock on the Section 11(a)(ii) Trig-
               ger Date and the per share or per unit value of
               any Common Stock Equivalent shall be deemed to
               equal the Current Market Price per share of the
               Common Stock on such date. 

                         (b)  In case the Company shall fix a
          record date for the issuance of rights, options or war-
          rants to all holders of Preferred Stock entitling them to
          subscribe for or purchase (for a period expiring within 
          forty-five (45) days after such record date) Preferred
          Stock (or shares having the same rights, privileges and
          preferences as the shares of Preferred Stock ("Equivalent
          Preferred Stock")) or securities convertible into Pre-
          ferred Stock or Equivalent Preferred Stock at a price per
          share of Preferred Stock or per share of Equivalent
          Preferred Stock (or having a conversion price per share,
          if a security convertible into Preferred Stock or Equiva-
          lent Preferred Stock) less than the Current Market Price
          per share of Preferred Stock on such record date, the
          Purchase Price to be in effect after such record date
          shall be determined by multiplying the Purchase Price in
          effect immediately prior to such record date by a frac-
          tion, the numerator of which shall be the number of
          shares of Preferred Stock outstanding on such record
          date, plus the number of shares of Preferred Stock that
          the aggregate offering price of the total number of
          shares of Preferred Stock and/or Equivalent Preferred
          Stock so to be offered (and/or the aggregate initial
          conversion price of the convertible securities so to be
          offered) would purchase at such Current Market Price, and
          the denominator of which shall be the number of shares of
          Preferred Stock outstanding on such record date, plus the
          number of additional shares of Preferred Stock and/or
          Equivalent Preferred Stock to be offered for subscription
          or purchase (or into which the convertible securities so
          to be offered are initially convertible).  In case such
          subscription price may be paid by delivery of consider-
          ation part or all of which may be in a form other than
          cash, the value of such consideration shall be as deter-
          mined in good faith by the Board, whose determination
          shall be described in a statement filed with the Rights
          Agent and shall be binding on the Rights Agent and the
          holders of the Rights.  Shares of Preferred Stock owned
          by or held for the account of the Company shall not be
          deemed outstanding for the purpose of any such computa-
          tion.  Such adjustment shall be made successively whenev-
          er such a record date is fixed, and in the event that
          such rights or warrants are not so issued, the Purchase
          Price shall be adjusted to be the Purchase Price that
          would then be in effect if such record date had not been
          fixed. 

                         (c)  In case the Company shall fix a
          record date for a distribution to all holders of
          Preferred Stock (including any such distribution made in
          connection with a consolidation or merger in which the
          Company is the continuing corporation) of evidences of
          indebtedness, cash (other than a regular quarterly cash
          dividend out of the earnings or retained earnings of the
          Company), assets (other than a dividend payable in
          Preferred Stock, but including any dividend payable in
          stock other than Preferred Stock) or subscription rights
          or warrants (excluding those referred to in Section 11(b)
          hereof), the Purchase Price to be in effect after such
          record date shall be determined by multiplying the Pur-
          chase Price in effect immediately prior to such record
          date by a fraction, the numerator of which shall be the
          Current Market Price per share of Preferred Stock on such
          record date, less the fair market value (as determined in
          good faith by the Board, whose determination shall be
          described in a statement filed with the Rights Agent) of
          the portion of the cash, assets or evidences of indebted-
          ness so to be distributed or of such subscription rights
          or warrants applicable to a share of Preferred Stock and
          the denominator of which shall be such Current Market
          Price per share of Preferred Stock.  Such adjustments
          shall be made successively whenever such a record date is
          fixed, and in the event that such distribution is not so
          made, the Purchase Price shall be adjusted to be the
          Purchase Price which would have been in effect if such
          record date had not been fixed. 

                         (d)  (i)  For the purpose of any computa-
          tion hereunder, other than computations made pursuant to
          Section 11(a)(iii) hereof, the "Current Market Price" per
          share of Common Stock on any date shall be deemed to be
          the average of the daily closing prices per share of such
          Common Stock for the thirty (30) consecutive Trading Days
          immediately prior to such date, and for purposes of
          computations made pursuant to Section 11(a)(iii) hereof,
          the Current Market Price per share of Common Stock on any
          date shall be deemed to be the average of the daily
          closing prices per share of such Common Stock for the ten
          (10) consecutive Trading Days immediately following such
          date; provided, however, that in the event that the
          Current Market Price per share of the Common Stock is
          determined during a period following the announcement by
          the issuer of such Common Stock of (A) a dividend or
          distribution on such Common Stock payable in shares of
          such Common Stock or securities convertible into shares
          of such Common Stock (other than the Rights), or (B) any
          subdivision, combination or reclassification of such
          Common Stock, and the ex-dividend date for such dividend
          or distribution, or the record date for such subdivision,
          combination or reclassification shall not have occurred
          prior to the commencement of the requisite thirty (30)
          Trading Day or ten (10) Trading Day period, as set forth
          above, then, and in each such case, the Current Market
          Price shall be properly adjusted to take into account
          ex-dividend trading.  The closing price for each day
          shall be the last sale price, regular way, or, in case no
          such sale takes place on such day, the average of the
          closing bid and asked prices, regular way, in either case
          as reported in the principal consolidated transaction
          reporting system with respect to securities listed or
          admitted to trading on the Nasdaq National Market System
          or, if the shares of Common Stock are not listed or
          admitted to trading on the Nasdaq National Market System,
          as reported in the principal consolidated transaction
          reporting system with respect to securities listed on the
          principal national securities exchange on which the
          shares of Common Stock are listed or admitted to trading
          or, if the shares of Common Stock are not listed or
          admitted to trading on any national securities exchange,
          the last quoted price or, if not so quoted, the average
          of the high bid and low asked prices in the
          over-the-counter market, as reported by the National
          Association of Securities Dealers, Inc. Automated Quota-
          tion System ("NASDAQ") or such other system then in use,
          or, if on any such date the shares of Common Stock are
          not quoted by any such organization, the average of the
          closing bid and asked prices as furnished by a profes-
          sional market maker making a market in the Common Stock
          selected by the Board.  If on any such date no market
          maker is making a market in the Common Stock, the fair
          value of such shares on such date as determined in good
          faith by the Board shall be used.  The term "Trading Day"
          shall mean a day on which the principal national securi-
          ties exchange on which the shares of Common Stock are
          listed or admitted to trading is open for the transaction
          of business or, if the shares of Common Stock are not
          listed or admitted to trading on any national securities
          exchange, a Business Day.  If the Common Stock is not
          publicly held or not so listed or traded, Current Market
          Price per share shall mean the fair value per share as
          determined in good faith by the Board, whose determina-
          tion shall be described in a statement filed with the
          Rights Agent and shall be conclusive for all purposes. 

                         (ii)  For the purpose of any computation
          hereunder, the Current Market Price per share of
          Preferred Stock shall be determined in the same manner as
          set forth above for the Common Stock in clause (i) of
          this Section 11(d) (other than the last sentence
          thereof).  If the Current Market Price per share of
          Preferred Stock cannot be determined in the manner pro-
          vided above or if the Preferred Stock is not publicly
          held or listed or traded in a manner described in clause
          (i) of this Section 11(d), the Current Market Price per
          share of Preferred Stock shall be conclusively deemed to
          be an amount equal to one thousand (1,000) (as such
          number may be appropriately adjusted for such events as
          stock splits, stock dividends and recapitalizations with
          respect to the Common Stock occurring after the date of
          this Agreement) multiplied by the Current Market Price
          per share of the Common Stock.  If neither the Common
          Stock nor the Preferred Stock is publicly held or so
          listed or traded, Current Market Price per share of the
          Preferred Stock shall mean the fair value per share as
          determined in good faith by the Board, whose determina-
          tion shall be described in a statement filed with the
          Rights Agent and shall be conclusive for all purposes. 
          For all purposes of this Agreement, the Current Market
          Price of a Unit shall be equal to the Current Market
          Price of one share of Preferred Stock divided by one
          thousand (1,000).

                         (e)  Anything herein to the contrary
          notwithstanding, no adjustment in the Purchase Price
          shall be required unless such adjustment would require an
          increase or decrease of at least one percent (1%) in the
          Purchase Price; provided, however, that any adjustments
          which by reason of this Section 11(e) are not required to
          be made shall be carried forward and taken into account
          in any subsequent adjustment.  All calculations under
          this Section 11 shall be made to the nearest cent or to
          the nearest ten-thousandth of a share of Common Stock or
          other share or one-millionth of a share of Preferred
          Stock, as the case may be.  Notwithstanding the first
          sentence of this Section 11(e), any adjustment required
          by this Section 11 shall be made no later than the earli-
          er of (i) three (3) years from the date of the transac-
          tion that mandates such adjustment and (ii) the Expira-
          tion Date. 

                         (f)  If as a result of an adjustment made
          pursuant to Section 11(a)(ii) or Section 13(a) hereof,
          the holder of any Right thereafter exercised shall become
          entitled to receive any shares of capital stock other
          than Preferred Stock, thereafter the number of such other
          shares so receivable upon exercise of any Right and the
          Purchase Price thereof shall be subject to adjustment
          from time to time in a manner and on terms as nearly
          equivalent as practicable to the provisions with respect
          to the Preferred Stock contained in Sections 11(a), (b),
          (c), (e), (g), (h), (i), (j), (k) and (m), and the provi-
          sions of Sections 7, 9, 10, 13 and 14 hereof with respect
          to the Preferred Stock shall apply on like terms to any
          such other shares. 

                         (g)  All Rights originally issued by the
          Company subsequent to any adjustment made to the Purchase
          Price hereunder shall evidence the right to purchase, at
          the adjusted Purchase Price, the number of one
          one-thousandths of a share of Preferred Stock purchasable
          from time to time hereunder upon exercise of the Rights,
          all subject to further adjustment as provided herein. 

                         (h)  Unless the Company shall have exer-
          cised its election as provided in Section 11(i), upon
          each adjustment of the Purchase Price as a result of the
          calculations made in Sections 11(b) and (c), each Right
          outstanding immediately prior to the making of such
          adjustment shall thereafter evidence the right to pur-
          chase, at the adjusted Purchase Price, that number of one
          one-thousandths of a share of Preferred Stock (calculated
          to the nearest one-millionth) obtained by (i) multiplying
          (x) the number of one one-thousandths of a share covered
          by a Right immediately prior to this adjustment, by (y)
          the Purchase Price in effect immediately prior to such
          adjustment of the Purchase Price, and (ii) dividing the
          product so obtained by the Purchase Price in effect
          immediately after such adjustment of the Purchase Price. 

                         (i)  The Company may elect on or after the
          date of any adjustment of the Purchase Price to adjust
          the number of Rights, in lieu of any adjustment in the
          number of one one-thousandths of a share of Preferred
          Stock purchasable upon the exercise of a Right.  Each of
          the Rights outstanding after the adjustment in the number
          of Rights shall be exercisable for the number of one
          one-thousandths of a share of Preferred Stock for which a
          Right was exercisable immediately prior to such adjust-
          ment.  Each Right held of record prior to such adjustment
          of the number of Rights shall become that number of
          Rights (calculated to the nearest one-ten-thousandth)
          obtained by dividing the Purchase Price in effect immedi-
          ately prior to adjustment of the Purchase Price by the
          Purchase Price in effect immediately after adjustment of
          the Purchase Price.  The Company shall make a public
          announcement of its election to adjust the number of
          Rights, indicating the record date for the adjustment,
          and, if known at the time, the amount of the adjustment
          to be made.  This record date may be the date on which
          the Purchase Price is adjusted or any day thereafter,
          but, if the Rights Certificates have been issued, shall
          be at least ten (10) days later than the date of the
          public announcement.  If Rights Certificates have been
          issued, upon each adjustment of the number of Rights
          pursuant to this Section 11(i), the Company shall, as
          promptly as practicable, cause to be distributed to
          holders of record of Rights Certificates on such record
          date Rights Certificates evidencing, subject to Section
          14 hereof, the additional Rights to which such holders
          shall be entitled as a result of such adjustment, or, at
          the option of the Company, shall cause to be distributed
          to such holders of record in substitution and replacement
          for the Rights Certificates held by such holders prior to
          the date of adjustment, and upon surrender thereof, if
          required by the Company, new Rights Certificates evidenc-
          ing all the Rights to which such holders shall be enti-
          tled after such adjustment.  Rights Certificates so to be
          distributed shall be issued, executed and countersigned
          in the manner provided for herein (and may bear, at the
          option of the Company, the adjusted Purchase Price) and
          shall be registered in the names of the holders of record
          of Rights Certificates on the record date specified in
          the public announcement. 

                         (j)  Irrespective of any adjustment or
          change in the Purchase Price or the number of one one-
          thousandths of a share of Preferred Stock issuable upon
          the exercise of the Rights, the Rights Certificates
          theretofore and thereafter issued may continue to express
          the Purchase Price per one one-thousandth of a share and
          the number of one one-thousandths of a share that were
          expressed in the initial Rights Certificates issued
          hereunder. 

                         (k)  Before taking any action that would
          cause an adjustment reducing the Purchase Price below the
          then stated value, if any, of the number of one
          one-thousandths of a share of Preferred Stock issuable
          upon exercise of the Rights, the Company shall take any
          corporate action that may, in the opinion of its counsel,
          be necessary in order that the Company may validly and
          legally issue fully paid and nonassessable such number of
          one one-thousandths of a share of Preferred Stock at such
          adjusted Purchase Price. 

                         (l)  In any case in which this Section 11
          shall require that an adjustment in the Purchase Price be
          made effective as of a record date for a specified event,
          the Company may elect to defer until the occurrence of
          such event the issuance to the holder of any Right exer-
          cised after such record date the number of one
          one-thousandths of a share of Preferred Stock and other
          capital stock or securities of the Company, if any,
          issuable upon such exercise over and above the number of
          one one-thousandths of a share of Preferred Stock and
          other capital stock or securities of the Company, if any,
          issuable upon such exercise on the basis of the Purchase
          Price in effect prior to such adjustment; provided,
          however, that the Company shall deliver to such holder a
          due bill or other appropriate instrument evidencing such
          holder's right to receive such additional shares (frac-
          tional or otherwise) or securities upon the occurrence of
          the event requiring such adjustment. 

                         (m)  Anything in this Section 11 to the
          contrary notwithstanding, the Company shall be entitled
          to make such reductions in the Purchase Price, in addi-
          tion to those adjustments expressly required by this
          Section 11, as and to the extent that in their good faith
          judgment the Board shall determine to be advisable in
          order that any (i) consolidation or subdivision of the
          Preferred Stock, (ii) issuance wholly for cash of any
          shares of Preferred Stock at less than the Current Market
          Price, (iii) issuance wholly for cash of shares of Pre-
          ferred Stock or securities which by their terms are
          convertible into or exchangeable for shares of Preferred
          Stock, (iv) stock dividends or (v) issuance of rights,
          options or warrants referred to in this Section 11,
          hereafter made by the Company to holders of its Preferred
          Stock shall not be taxable to such stockholders. 

                         (n)  The Company covenants and agrees that
          it shall not, at any time after the Distribution Date,
          (i) consolidate with any other Person (other than a
          Subsidiary of the Company in a transaction that complies
          with Section 11(o) hereof), (ii) merge with or into any
          other Person (other than a Subsidiary of the Company in a
          transaction which complies with Section 11(o) hereof), or
          (iii) sell or transfer (or permit any Subsidiary to sell
          or transfer), in one transaction, or a series of related
          transactions, assets or earning power aggregating more
          than fifty percent (50%) of the assets or earning power
          of the Company and its Subsidiaries (taken as a whole) to
          any other Person or Persons (other than the Company
          and/or any of its Subsidiaries in one or more transac-
          tions each of which complies with Section 11(o) hereof),
          if (x) at the time of or immediately after such consoli-
          dation, merger or sale there are any rights, warrants or
          other instruments or securities outstanding or agreements
          in effect which would substantially diminish or otherwise
          eliminate the benefits intended to be afforded by the
          Rights or (y) prior to, simultaneously with or immediate-
          ly after such consolidation, merger or sale, the stock-
          holders of the Person who constitutes, or would consti-
          tute, the "Principal Party" for purposes of Section 13(a)
          hereof shall have received a distribution of Rights
          previously owned by such Person or any of its Affiliates
          and Associates. 

                         (o)  The Company covenants and agrees
          that, after the Distribution Date, it will not, except as
          permitted by Section 23 or Section 26 hereof, take (or
          permit any Subsidiary to take) any action if at the time
          such action is taken it is reasonably foreseeable that
          such action will diminish substantially or otherwise
          eliminate the benefits intended to be afforded by the
          Rights. 

                         (p)  Anything in this Agreement to the
          contrary notwithstanding, in the event that the Company
          shall at any time after the Rights Dividend Declaration
          Date and prior to the Distribution Date (i) declare a
          dividend on the outstanding shares of Common Stock pay-
          able in shares of Common Stock, (ii) subdivide the out-
          standing shares of Common Stock or (iii) combine the
          outstanding shares of Common Stock into a smaller number
          of shares, the number of Rights associated with each
          share of Common Stock then outstanding, or issued or
          delivered thereafter but prior to the Distribution Date,
          shall be proportionately adjusted so that the number of
          Rights thereafter associated with each share of Common
          Stock following any such event shall equal the result
          obtained by multiplying the number of Rights associated
          with each share of Common Stock immediately prior to such
          event by a fraction the numerator which shall be the
          total number of shares of Common Stock outstanding imme-
          diately prior to the occurrence of the event and the
          denominator of which shall be the total number of shares
          of Common Stock outstanding immediately following the
          occurrence of such event. 

                    Section 12.  Certificate of Adjusted Purchase
          Price or Number of Shares.  Whenever an adjustment is
          made as provided in Section 11 and Section 13 hereof, the
          Company shall promptly (a) prepare a certificate setting
          forth such adjustment and a brief statement of the facts
          accounting for such adjustment, (b) file with the Rights
          Agent, and with each transfer agent for the Preferred
          Stock and the Common Stock, a copy of such certificate
          and (c) if a Distribution Date has occurred, mail a brief
          summary thereof to each registered holder of a Rights
          Certificate in accordance with Section 26 hereof.  The
          Rights Agent shall be fully protected in relying on any
          such certificate and on any adjustment therein contained.

                    Section 13.  Consolidation, Merger or Sale or
          Transfer of Assets or Earning Power. 

                         (a)  In the event that, following the
          Stock Acquisition Date, directly or indirectly, (x) the
          Company shall consolidate with, or merge with and into,
          any other Person (other than a Subsidiary of the Company
          in a transaction which complies with Section 11(o) here-
          of), and the Company shall not be the continuing or
          surviving corporation of such consolidation or merger,
          (y) any Person (other than a Subsidiary of the Company in
          a transaction which complies with Section 11(o) hereof)
          shall consolidate with, or merge with or into, the Compa-
          ny, and the Company shall be the continuing or surviving
          corporation of such consolidation or merger and, in
          connection with such consolidation or merger, all or part
          of the outstanding shares of Common Stock shall be
          changed into or exchanged for stock or other securities
          of any other Person or cash or any other property or (z)
          the Company shall sell or otherwise transfer (or one or
          more of its Subsidiaries shall sell or otherwise trans-
          fer), in one transaction or a series of related transac-
          tions, assets or earning power aggregating more than
          fifty percent (50%) of the assets or earning power of the
          Company and its Subsidiaries (taken as a whole) to any
          Person or Persons (other than the Company or any Subsid-
          iary of the Company in one or more transactions each of
          which complies with Section 11(o) hereof), then, and in
          each such case (except as may be contemplated by Section
          13(d) hereof), proper provision shall be made so that: 
          (i) each holder of a Right, except as provided in Section
          7(e) hereof, shall thereafter have the right to receive,
          upon the exercise thereof at the then current Purchase
          Price in accordance with the terms of this Agreement,
          such number of validly authorized and issued, fully paid,
          non-assessable and freely tradeable shares of Common
          Stock of the Principal Party (as defined below), not
          subject to any liens, encumbrances, rights of first
          refusal or other adverse claims, as shall be equal to the
          result obtained by (1) multiplying the then current
          Purchase Price by the number of one one-thousandths of a
          share of Preferred Stock for which a Right is exercisable
          immediately prior to the first occurrence of a Section 13
          Event (or, if a Section 11(a)(ii) Event has occurred
          prior to the first occurrence of a Section 13 Event,
          multiplying the number of such one one-thousandths of a
          share for which a Right was exercisable immediately prior
          to the first occurrence of a Section 11(a)(ii) Event by
          the Purchase Price in effect immediately prior to such
          first occurrence), and dividing that product (which,
          following the first occurrence of a Section 13 Event,
          shall be referred to as the "Purchase Price" for each
          Right and for all purposes of this Agreement) by (2)
          fifty percent (50%) of the Current Market Price per share
          of the Common Stock of such Principal Party on the date
          of consummation of such Section 13 Event; (ii) such
          Principal Party shall thereafter be liable for, and shall
          assume, by virtue of such Section 13 Event, all the
          obligations and duties of the Company pursuant to this
          Agreement; (iii) the term "Company" shall thereafter be
          deemed to refer to such Principal Party, it being specif-
          ically intended that the provisions of Section 11 hereof
          shall apply only to such Principal Party following the
          first occurrence of a Section 13 Event; (iv) such Princi-
          pal Party shall take such steps (including, but not
          limited to, the reservation of a sufficient number of
          shares of its Common Stock) in connection with the con-
          summation of any such transaction as may be necessary to
          assure that the provisions hereof shall thereafter be
          applicable, as nearly as reasonably may be, in relation
          to its shares of Common Stock thereafter deliverable upon
          the exercise of the Rights; and (v) the provisions of
          Section 11(a)(ii) hereof shall be of no effect following
          the first occurrence of any Section 13 Event. 

                         (b)  "Principal Party" shall mean: 

                              (i)  in the case of any transac-
               tion described in clause (x) or (y) of the
               first sentence of Section 13(a), the Person
               that is the issuer of any securities into which
               shares of Common Stock of the Company are con-
               verted in such merger or consolidation, and if
               no securities are so issued, the Person that is
               the other party to such merger or consolida-
               tion; and  

                              (ii)  in the case of any trans-
               action described in clause (z) of the first
               sentence of Section 13(a), the Person that is
               the party receiving the greatest portion of the
               assets or earning power transferred pursuant to
               such transaction or transactions; 

          provided, however, that in any such case, (1) if the
          Common Stock of such Person is not at such time and has
          not been continuously over the preceding twelve (12)
          month period registered under Section 12 of the Exchange
          Act, and such Person is a direct or indirect Subsidiary
          of another Person the Common Stock of which is and has
          been so registered, "Principal Party" shall refer to such
          other Person; and (2) in case such Person is a Subsid-
          iary, directly or indirectly, of more than one Person,
          the Common Stocks of two or more of which are and have
          been so registered, "Principal Party" shall refer to
          whichever of such Persons is the issuer of the Common
          Stock having the greatest aggregate market value. 

                         (c)  The Company shall not consummate any
          such consolidation, merger, sale or transfer unless the
          Principal Party shall have a sufficient number of
          authorized shares of its Common Stock which have not been
          issued or reserved for issuance to permit the exercise in
          full of the Rights in accordance with this Section 13 and
          unless prior thereto the Company and such Principal Party
          shall have executed and delivered to the Rights Agent a
          supplemental agreement providing for the terms set forth
          in subsections (a) and (b) of this Section 13 and further
          providing that, as soon as practicable after the date of
          any consolidation, merger or sale of assets mentioned in
          subsection (a) of this Section 13, the Principal Party
          will:  

                              (i)  prepare and file a
               registration statement under the Act with re-
               spect to the Rights and the securities purchas-
               able upon exercise of the Rights on an appro-
               priate form, and will use its best efforts to
               cause such registration statement to (A) become
               effective as soon as practicable after such
               filing and (B) remain effective (with a pro-
               spectus at all times meeting the requirements
               of the Act) until the Expiration Date; 

                              (ii)  take all such other action
               as may be necessary to enable the Principal
               Party to issue the securities purchasable upon
               exercise of the Rights, including but not lim-
               ited to the registration or qualification of
               such securities under all requisite securities
               laws of jurisdictions of the various states and
               the listing of such securities on such exchang-
               es and trading markets as may be necessary or
               appropriate; and 

                              (iii)  deliver to holders of the
               Rights historical financial statements for the
               Principal Party and each of its Affiliates
               which comply in all respects with the require-
               ments for registration on Form 10 under the
               Exchange Act. 

          The provisions of this Section 13 shall similarly apply
          to successive mergers or consolidations or sales or other
          transfers.  In the event that a Section 13 Event shall
          occur at any time after the occurrence of a Section
          11(a)(ii) Event, the Rights which have not theretofore
          been exercised shall thereafter become exercisable in the
          manner described in Section 13(a). 

                         (d)  Notwithstanding anything in this
          Agreement to the contrary, Section 13 shall not be appli-
          cable to a transaction described in subsections (x) and
          (y) of Section 13(a) if (i) such transaction is consum-
          mated with a Person or Persons who acquired shares of
          Common Stock pursuant to a Qualified Offer (or a wholly
          owned subsidiary of any such Person or Persons), (ii) the
          price per share of Common Stock offered in such transac-
          tion is not less than the price per share of Common Stock
          paid to all holders of shares of Common Stock whose
          shares were purchased pursuant to such tender offer or
          exchange offer and (iii) the form of consideration being
          offered to the remaining holders of shares of Common
          Stock pursuant to such transaction is the same as the
          form of consideration paid pursuant to such Qualified
          Offer.  Upon consummation of any such transaction contem-
          plated by this Section 13(d), all Rights hereunder shall
          expire. 

                    Section 14.  Fractional Rights and Fractional
          Shares. 

                         (a)  The Company shall not be required to
          issue fractions of Rights, except prior to the
          Distribution Date as provided in Section 11(p) hereof, or
          to distribute Rights Certificates which evidence frac-
          tional Rights.  In lieu of such fractional Rights, there
          shall be paid to the registered holders of the Rights
          Certificates with regard to which such fractional Rights
          would otherwise be issuable, an amount in cash equal to
          the same fraction of the current market value of a whole
          Right.  For purposes of this Section 14(a), the current
          market value of a whole Right shall be the closing price
          of the Rights for the Trading Day immediately prior to
          the date on which such fractional Rights would have been
          otherwise issuable.  The closing price of the Rights for
          any day shall be the last sale price, regular way, or, in
          case no such sale takes place on such day, the average of
          the closing bid and asked prices, regular way, in either
          case as reported in the principal consolidated transac-
          tion reporting system with respect to securities listed
          or admitted to trading on the Nasdaq National Market
          System or, if the Rights are not listed or admitted to
          trading on the Nasdaq National Market System, as reported
          in the principal consolidated transaction reporting
          system with respect to securities listed on the principal
          national securities exchange on which the Rights are
          listed or admitted to trading, or if the Rights are not
          listed or admitted to trading on any national securities
          exchange, the last quoted price or, if not so quoted, the
          average of the high bid and low asked prices in the
          over-the-counter market, as reported by NASDAQ or such
          other system then in use or, if on any such date the
          Rights are not quoted by any such organization, the
          average of the closing bid and asked prices as furnished
          by a professional market maker making a market in the
          Rights selected by the Board.  If on any such date no
          such market maker is making a market in the Rights the
          fair value of the Rights on such date as determined in
          good faith by the Board shall be used. 

                         (b)  The Company shall not be required to
          issue fractions of shares of Preferred Stock (other than
          fractions that are integral multiples of one
          one-thousandth of a share of Preferred Stock) upon exer-
          cise of the Rights or to distribute certificates which
          evidence fractional shares of Preferred Stock (other than
          fractions that are integral multiples of one
          one-thousandth of a share of Preferred Stock).  In lieu
          of fractional shares of Preferred Stock that are not
          integral multiples of one one-thousandth of a share of
          Preferred Stock, the Company may pay to the registered
          holders of Rights Certificates at the time such Rights
          are exercised as herein provided an amount in cash equal
          to the same fraction of the current market value of one
          one-thousandth of a share of Preferred Stock.  For pur-
          poses of this Section 14(b), the current market value of
          one one-thousandth of a share of Preferred Stock shall be
          one one-thousandth of the closing price of a share of
          Preferred Stock (as determined pursuant to Section
          11(d)(ii) hereof) for the Trading Day immediately prior
          to the date of such exercise. 

                         (c)  Following the occurrence of a Trig-
          gering Event, the Company shall not be required to issue
          fractions of shares of Common Stock upon exercise of the
          Rights or to distribute certificates which evidence
          fractional shares of Common Stock.  In lieu of fractional
          shares of Common Stock, the Company may pay to the
          registered holders of Rights Certificates at the time
          such Rights are exercised as herein provided an amount in
          cash equal to the same fraction of the current market
          value of one (1) share of Common Stock.  For purposes of
          this Section 14(c), the current market value of one share
          of Common Stock shall be the closing price of one share
          of Common Stock (as determined pursuant to Section
          11(d)(i) hereof) for the Trading Day immediately prior to
          the date of such exercise. 

                         (d)  The holder of a Right by the accep-
          tance of the Rights expressly waives his right to receive
          any fractional Rights or any fractional shares upon
          exercise of a Right, except as permitted by this Section
          14. 

                    Section 15.  Rights of Action.  All rights of
          action in respect of this Agreement are vested in the
          respective registered holders of the Rights Certificates
          (and, prior to the Distribution Date, the registered
          holders of the Common Stock); and any registered holder
          of any Rights Certificate (or, prior to the Distribution
          Date, of the Common Stock), without the consent of the
          Rights Agent or of the holder of any other Rights Certif-
          icate (or, prior to the Distribution Date, of the Common
          Stock), may, in his own behalf and for his own benefit,
          enforce, and may institute and maintain any suit, action
          or proceeding against the Company to enforce, or other-
          wise act in respect of, his right to exercise the Rights
          evidenced by such Rights Certificate in the manner pro-
          vided in such Rights Certificate and in this Agreement. 
          Without limiting the foregoing or any remedies available
          to the holders of Rights, it is specifically acknowledged
          that the holders of Rights would not have an adequate
          remedy at law for any breach of this Agreement and shall
          be entitled to specific performance of the obligations
          hereunder and injunctive relief against actual or threat-
          ened violations of the obligations hereunder of any
          Person subject to this Agreement. 

                    Section 16.  Agreement of Rights Holders. 
          Every holder of a Right by accepting the same consents
          and agrees with the Company and the Rights Agent and with
          every other holder of a Right that: 

                         (a)  prior to the Distribution Date, the
          Rights will be transferable only in connection with the
          transfer of Common Stock; 

                         (b)  after the Distribution Date, the
          Rights Certificates are transferable only on the registry
          books of the Rights Agent if surrendered at the principal
          office or offices of the Rights Agent designated for such
          purposes, duly endorsed or accompanied by a proper
          instrument of transfer and with the appropriate forms and
          certificates fully executed;  

                         (c)  subject to Section 6(a) and Section
          7(f) hereof, the Company and the Rights Agent may deem
          and treat the Person in whose name a Rights Certificate
          (or, prior to the Distribution Date, the associated
          Common Stock certificate) is registered as the absolute
          owner thereof and of the Rights evidenced thereby (not-
          withstanding any notations of ownership or writing on the
          Rights Certificates or the associated Common Stock cer-
          tificate made by anyone other than the Company or the
          Rights Agent) for all purposes whatsoever, and neither
          the Company nor the Rights Agent, subject to the last
          sentence of Section 7(e) hereof, shall be required to be
          affected by any notice to the contrary; and  

                         (d)  notwithstanding anything in this
          Agreement to the contrary, neither the Company nor the
          Rights Agent shall have any liability to any holder of a
          Right or other Person as a result of its inability to
          perform any of its obligations under this Agreement by
          reason of any preliminary or permanent injunction or
          other order, decree or ruling issued by a court of compe-
          tent jurisdiction or by a governmental, regulatory or
          administrative agency or commission, or any statute,
          rule, regulation or executive order promulgated or
          enacted by any governmental authority, prohibiting or
          otherwise restraining performance of such obligation;
          provided, however, the Company must use its best efforts
          to have any such order, decree or ruling lifted or other-
          wise overturned as soon as possible. 

                    Section 17.  Rights Certificate Holder Not
          Deemed a Stockholder.  No holder, as such, of any Rights
          Certificate shall be entitled to vote, receive dividends
          or be deemed for any purpose the holder of the number of
          one one-thousandths of a share of Preferred Stock or any
          other securities of the Company that may at any time be
          issuable on the exercise of the Rights represented
          thereby, nor shall anything contained herein or in any
          Rights Certificate be construed to confer upon the holder
          of any Rights Certificate, as such, any of the rights of
          a stockholder of the Company or any right to vote for the
          election of directors or upon any matter submitted to
          stockholders at any meeting thereof, or to give or with-
          hold consent to any corporate action, or to receive
          notice of meetings or other actions affecting stockhold-
          ers (except as provided in Section 25 hereof), or to
          receive dividends or subscription rights, or otherwise,
          until the Right or Rights evidenced by such Rights Cer-
          tificate shall have been exercised in accordance with the
          provisions hereof. 

                    Section 18.  Concerning the Rights Agent. 

                         (a)  The Company agrees to pay to the
          Rights Agent reasonable compensation for all services
          rendered by it hereunder and, from time to time, on
          demand of the Rights Agent, its reasonable expenses and
          counsel fees and disbursements and other disbursements
          incurred in the administration and execution of this
          Agreement and the exercise and performance of its duties
          hereunder.  The Company also agrees to indemnify the
          Rights Agent for, and to hold it harmless against, any
          loss, liability, or expense, incurred without negligence,
          bad faith or willful misconduct on the part of the Rights
          Agent, for anything done or omitted by the Rights Agent
          in connection with the acceptance and administration of
          this Agreement, including the costs and expenses of
          defending against any claim of liability in the premises.
          In no case shall the Rights Agent be liable for special,
          indirect, incidental or consequential loss or damage of
          any kind whatsoever, even if the Rights Agent has been
          advised of the likelihood of such loss or damage.

                         (b)  The Rights Agent shall be protected
          and shall incur no liability for or in respect of any
          action taken, suffered or omitted by it in connection
          with its administration of this Agreement in reliance
          upon any Rights Certificate or certificate for Common
          Stock or for other securities of the Company, instrument
          of assignment or transfer, power of attorney, endorse-
          ment, affidavit, letter, notice, direction, consent,
          certificate, statement, or other paper or document
          believed by it to be genuine and to be signed, executed
          and, where necessary, verified or acknowledged, by the
          proper Person or Persons.

                    Section 19.  Merger or Consolidation or Change
          of Name of Rights Agent.

                         (a)  Any corporation into which the Rights
          Agent or any successor Rights Agent may be merged or with
          which it may be consolidated, or any corporation result-
          ing from any merger or consolidation to which the Rights
          Agent or any successor Rights Agent shall be a party, or
          any corporation succeeding to the corporate trust or
          shareholder services business of the Rights Agent or any
          successor Rights Agent, shall be the successor to the
          Rights Agent under this Agreement without the execution
          or filing of any paper or any further act on the part of
          any of the parties hereto; provided, however, that such
          corporation would be eligible for appointment as a suc-
          cessor Rights Agent under the provisions of Section 21
          hereof.  In case at the time such successor Rights Agent
          shall succeed to the agency created by this Agreement,
          any of the Rights Certificates shall have been counter-
          signed but not delivered, any such successor Rights Agent
          may adopt the countersignature of a predecessor Rights
          Agent and deliver such Rights Certificates so counter-
          signed; and in case at that time any of the Rights Cer-
          tificates shall not have been countersigned, any succes-
          sor Rights Agent may countersign such Rights Certificates
          either in the name of the predecessor or in the name of
          the successor Rights Agent; and in all such cases such
          Rights Certificates shall have the full force provided in
          the Rights Certificates and in this Agreement. 

                         (b)  In case at any time the name of the
          Rights Agent shall be changed and at such time any of the
          Rights Certificates shall have been countersigned but not
          delivered, the Rights Agent may adopt the countersigna-
          ture under its prior name and deliver Rights Certificates
          so countersigned; and in case at that time any of the
          Rights Certificates shall not have been countersigned,
          the Rights Agent may countersign such Rights Certificates
          either in its prior name or in its changed name; and in
          all such cases such Rights Certificates shall have the
          full force provided in the Rights Certificates and in
          this Agreement. 

                    Section 20.  Duties of Rights Agent.  The
          Rights Agent undertakes the duties and obligations im-
          posed by this Agreement upon the following terms and
          conditions, by all of which the Company and the holders
          of Rights Certificates, by their acceptance thereof,
          shall be bound: 

                         (a)  The Rights Agent may consult with
          legal counsel (who may be legal counsel for the Company),
          and the opinion of such counsel shall be full and
          complete authorization and protection to the Rights Agent
          as to any action taken or omitted by it in good faith and
          in accordance with such opinion. 

                         (b)  Whenever in the performance of its
          duties under this Agreement the Rights Agent shall deem
          it necessary or desirable that any fact or matter
          (including, without limitation, the identity of any
          Acquiring Person and the determination of Current Market
          Price) be proved or established by the Company prior to
          taking or suffering any action hereunder, such fact or
          matter (unless other evidence in respect thereof be
          herein specifically prescribed) may be deemed to be
          conclusively proved and established by a certificate
          signed by the Chairman of the Board, the President, any
          Vice President, the Treasurer, any Assistant Treasurer,
          the Secretary or any Assistant Secretary of the Company
          and delivered to the Rights Agent; and such certificate
          shall be full authorization to the Rights Agent for any
          action taken or suffered in good faith by it under the
          provisions of this Agreement in reliance upon such cer-
          tificate. 

                         (c)  The Rights Agent shall be liable
          hereunder only for its own negligence, bad faith or
          willful misconduct. 

                         (d)  The Rights Agent shall not be liable
          for or by reason of any of the statements of fact or
          recitals contained in this Agreement or in the Rights
          Certificates or be required to verify the same (except as
          to its countersignature on such Rights Certificates), but
          all such statements and recitals are and shall be deemed
          to have been made by the Company only. 

                         (e)  The Rights Agent shall not be under
          any responsibility in respect of the validity of this
          Agreement or the execution and delivery hereof (except
          the due execution hereof by the Rights Agent) or in
          respect of the validity or execution of any Rights Cer-
          tificate (except its countersignature thereof); nor shall
          it be responsible for any breach by the Company of any
          covenant or condition contained in this Agreement or in
          any Rights Certificate; nor shall it be responsible for
          any adjustment required under the provisions of Section
          11, Section 13 or Section 24 hereof or responsible for
          the manner, method or amount of any such adjustment or
          the ascertaining of the existence of facts that would
          require any such adjustment (except with respect to the
          exercise of Rights evidenced by Rights Certificates after
          actual notice of any such adjustment); nor shall it by
          any act hereunder be deemed to make any representation or
          warranty as to the authorization or reservation of any
          shares of Common Stock or Preferred Stock to be issued
          pursuant to this Agreement or any Rights Certificate or
          as to whether any shares of Common Stock or Preferred
          Stock will, when so issued, be validly authorized and
          issued, fully paid and nonassessable. 

                         (f)  The Company agrees that it will
          perform, execute, acknowledge and deliver or cause to be
          performed, executed, acknowledged and delivered all such
          further and other acts, instruments and assurances as may
          reasonably be required by the Rights Agent for the carry-
          ing out or performing by the Rights Agent of the
          provisions of this Agreement. 

                         (g)  The Rights Agent is hereby authorized
          and directed to accept instructions with respect to the
          performance of its duties hereunder from the Chairman of
          the Board, the President, any Vice President, the
          Secretary, any Assistant Secretary, the Treasurer or any
          Assistant Treasurer of the Company, and to apply to such
          officers for advice or instructions in connection with
          its duties, and it shall not be liable for any action
          taken or suffered to be taken by it in good faith in
          accordance with instructions of any such officer. 

                         (h)  The Rights Agent and any stockholder,
          director, officer or employee of the Rights Agent may
          buy, sell or deal in any of the Rights or other
          securities of the Company or become pecuniarily
          interested in any transaction in which the Company may be
          interested, or contract with or lend money to the Company
          or otherwise act as fully and freely as though it were
          not Rights Agent under this Agreement.  Nothing herein
          shall preclude the Rights Agent from acting in any other
          capacity for the Company or for any other legal entity. 

                         (i)  The Rights Agent may execute and
          exercise any of the rights or powers hereby vested in it
          or perform any duty hereunder either itself or by or
          through its attorneys or agents, and the Rights Agent
          shall not be answerable or accountable for any act,
          default, neglect or misconduct of any such attorneys or
          agents or for any loss to the Company resulting from any
          such act, default, neglect or misconduct; provided,
          however, reasonable care was exercised in the selection
          and continued employment thereof. 

                         (j)  No provision of this Agreement shall
          require the Rights Agent to expend or risk its own funds
          or otherwise incur any financial liability in the perfor-
          mance of any of its duties hereunder or in the exercise
          of its rights if there shall be reasonable grounds for
          believing that repayment of such funds or adequate indem-
          nification against such risk or liability is not
          reasonably assured to it. 

                         (k)  If, with respect to any Rights Cer-
          tificate surrendered to the Rights Agent for exercise or
          transfer, the certificate attached to the form of assign-
          ment or form of election to purchase, as the case may be,
          has either not been completed or indicates an affirmative
          response to clause 1 and/or 2 thereof, the Rights Agent
          shall not take any further action with respect to such
          requested exercise or transfer without first consulting
          with the Company. 

                    Section 21.  Change of Rights Agent.  The
          Rights Agent or any successor Rights Agent may resign and
          be discharged from its duties under this Agreement upon
          thirty (30) days' notice in writing mailed to the Company
          and to each transfer agent of the Common Stock and Pre-
          ferred Stock, by registered or certified mail, and, if
          such resignation occurs after the Distribution Date, to
          the registered holders of the Rights Certificates by
          first-class mail.  The Company may remove the Rights
          Agent or any successor Rights Agent upon thirty (30)
          days' notice in writing, mailed to the Rights Agent or
          successor Rights Agent, as the case may be, and to each
          transfer agent of the Common Stock and Preferred Stock,
          by registered or certified mail, and, if such removal
          occurs after the Distribution Date, to the registered
          holders of the Rights Certificates by first-class mail. 
          If the Rights Agent shall resign or be removed or shall
          otherwise become incapable of acting, the Company shall
          appoint a successor to the Rights Agent.  If the Company
          shall fail to make such appointment within a period of
          thirty (30) days after giving notice of such removal or
          after it has been notified in writing of such resignation
          or incapacity by the resigning or incapacitated Rights
          Agent or by the holder of a Rights Certificate (who
          shall, with such notice, submit his Rights Certificate
          for inspection by the Company), then any registered
          holder of any Rights Certificate may apply to any court
          of competent jurisdiction for the appointment of a new
          Rights Agent.  Any successor Rights Agent, whether ap-
          pointed by the Company or by such a court, shall be (a) a
          corporation or other entity organized and doing business
          under the laws of the United States or of any of the
          states of the United States, in good standing, that is
          authorized under such laws to exercise corporate trust
          powers and is subject to supervision or examination by
          federal or state authority and which has at the time of
          its appointment as Rights Agent a combined capital and
          surplus of at least $50,000,000 or (b) an affiliate of a
          corporation or other entity described in clause (a) of
          this sentence.  After appointment, the successor Rights
          Agent shall be vested with the same powers, rights,
          duties and responsibilities as if it had been originally
          named as Rights Agent without further act or deed; but
          the predecessor Rights Agent shall deliver and transfer
          to the successor Rights Agent any property at the time
          held by it hereunder, and execute and deliver any further
          assurance, conveyance, act or deed necessary for the
          purpose.  Not later than the effective date of any such
          appointment, the Company shall file notice thereof in
          writing with the predecessor Rights Agent and each
          transfer agent of the Common Stock and the Preferred
          Stock and, if such appointment occurs after the Distribu-
          tion Date, mail a notice thereof in writing to the
          registered holders of the Rights Certificates.  Failure
          to give any notice provided for in this Section 21,
          however, or any defect therein, shall not affect the
          legality or validity of the resignation or removal of the
          Rights Agent or the appointment of the successor Rights
          Agent, as the case may be. 

                    Section 22.  Issuance of New Rights Certifi-
          cates.  Notwithstanding any of the provisions of this
          Agreement or of the Rights to the contrary, the Company
          may, at its option, issue new Rights Certificates evi-
          dencing Rights in such form as may be approved by the
          Board to reflect any adjustment or change in the Purchase
          Price and the number or kind or class of shares or other
          securities or property purchasable under the Rights
          Certificates made in accordance with the provisions of
          this Agreement.  In addition, in connection with the
          issuance or sale of shares of Common Stock following the
          Distribution Date and prior to the redemption or expira-
          tion of the Rights, the Company (a) shall, with respect
          to shares of Common Stock so issued or sold pursuant to
          the exercise of stock options or under any employee plan
          or arrangement, granted or awarded as of the Distribution
          Date, or upon the exercise, conversion or exchange of
          securities hereafter issued by the Company, and (b) may,
          in any other case, if deemed necessary or appropriate by
          the Board, issue Rights Certificates representing the
          appropriate number of Rights in connection with such
          issuance or sale; provided, however, that (i) no such
          Rights Certificate shall be issued if, and to the extent
          that, the Company shall be advised by counsel that such
          issuance would create a significant risk of material
          adverse tax consequences to the Company or the Person to
          whom such Rights Certificate would be issued, and (ii) no
          such Rights Certificate shall be issued if, and to the
          extent that, appropriate adjustment shall otherwise have
          been made in lieu of the issuance thereof. 

                    Section 23.  Redemption and Termination.

                         (a)  The Board may, at its option, at any
          time prior to the earlier of (i) the close of business on
          the tenth Business Day following the Stock Acquisition
          Date (or, if the Stock Acquisition Date shall have oc-
          curred prior to the Record Date, the close of business on
          the tenth Business Day following the Record Date), or
          (ii) the Final Expiration Date, redeem all but not less
          than all the then outstanding Rights at a redemption
          price of $.001 per Right, as such amount may be appropri-
          ately adjusted to reflect any stock split, stock dividend
          or similar transaction occurring after the date hereof
          (such redemption price being hereinafter referred to as
          the "Redemption Price").  Notwithstanding anything con-
          tained in this Agreement to the contrary, the Rights
          shall not be exercisable after the first occurrence of a
          Section 11(a)(ii) Event until such time as the Company's
          right of redemption hereunder has expired.  The Company
          may, at its option, pay the Redemption Price in cash,
          shares of Common Stock (based on the Current Market Price
          of the Common Stock at the time of redemption) or any
          other form of consideration deemed appropriate by the
          Board. 

                         (b)  Immediately upon the action of the
          Board ordering the redemption of the Rights, evidence of
          which shall be filed by the Company with the Rights Agent
          and without any further action and without any notice,
          the right to exercise the Rights will terminate and the
          only right thereafter of the holders of Rights shall be
          to receive the Redemption Price for each Right so held. 
          Promptly after the action of the Board ordering the
          redemption of the Rights, the Company shall give notice
          of such redemption to the Rights Agent and the holders of
          the then outstanding Rights by mailing such notice to all
          such holders at each holder's last address as it appears
          upon the registry books of the Rights Agent or, prior to
          the Distribution Date, on the registry books of the
          transfer agent for the Common Stock.  Any notice which is
          mailed in the manner herein provided shall be deemed
          given, whether or not the holder receives the notice. 
          Each such notice of redemption will state the method by
          which the payment of the Redemption Price will be made.

                         (c)  Notwithstanding the provisions of
          Section 23(a) hereof, in the event that a majority of the
          Board is elected by stockholder action by written con-
          sent, or is comprised of persons elected at a meeting of
          stockholders who were not nominated by the Board in
          office immediately prior to such meeting, then for a
          period of one hundred eighty (180) days following the
          effectiveness of such election the Rights shall not be
          redeemed if such redemption is reasonably likely to have
          the purpose or effect of allowing any Person to become an
          Acquiring Person or otherwise facilitating the occurrence
          of a Triggering Event or a transaction with an Acquiring
          Person.

                    Section 24.  Exchange.  

                         (a) The Board may, at its option, at any
          time after any Person becomes an Acquiring Person, ex-
          change all or part of the then outstanding and exercis-
          able Rights (which shall not include Rights that have
          become void pursuant to the provisions of Section 7(e)
          hereof) for Common Stock at an exchange ratio of one
          share of Common Stock per Right, appropriately adjusted
          to reflect any stock split, stock dividend or similar
          transaction occurring after the date hereof (such ex-
          change ratio being hereinafter referred to as the "Ex-
          change Ratio").  Notwithstanding the foregoing, the Board
          shall not be empowered to effect such exchange at any
          time after any Person (other than the Company, any Sub-
          sidiary of the Company, any employee benefit plan of the
          Company or any such Subsidiary, or any entity holding
          Common Stock for or pursuant to the terms of any such
          plan), together with all Affiliates and Associates of
          such Person, becomes the Beneficial Owner of fifty per-
          cent (50%) or more of the Common Stock then outstanding.

                         (b)  Immediately upon the action of the
          Board ordering the exchange of any Rights pursuant to
          subsection (a) of this Section 24 and without any further
          action and without any notice, the right to exercise such
          Rights shall terminate and the only right thereafter of a
          holder of such Rights shall be to receive that number of
          shares of Common Stock equal to the number of such Rights
          held by such holder multiplied by the Exchange Ratio. 
          The Company shall promptly give public notice of any such
          exchange; provided, however, that the failure to give, or
          any defect in, such notice shall not affect the validity
          of such exchange.  The Company promptly shall mail a
          notice of any such exchange to the registered holders of
          such Rights at their last addresses as they appear upon
          the registry books of the Rights Agent.  Any notice of
          exchange mailed in the manner herein provided shall be
          deemed given, whether or not the holder receives the
          notice.  Each such notice of exchange shall state the
          method by which the exchange of the Common Stock for
          Rights will be effected and, in the event of any partial
          exchange, the number of Rights which will be exchanged. 
          Any partial exchange shall be effected pro rata based on
          the number of Rights (other than Rights which have become
          void pursuant to the provisions of Section 7(e) hereof)
          held by each holder of Rights.

                         (c)  In any exchange pursuant to this
          Section 24, the Company, at its option, may substitute
          Preferred Stock (or Equivalent Preferred Stock) for
          Common Stock exchangeable for Rights, at the initial rate
          of one one-thousandth of a share of Preferred Stock (or
          Equivalent Preferred Stock) for each share of Common
          Stock, as appropriately adjusted to reflect stock splits,
          stock dividends and other similar transactions after the
          date hereof.

                         (d)  In the event that there shall not be
          sufficient shares of Common Stock issued but not out-
          standing or authorized but unissued to permit any ex-
          change of Rights as contemplated in accordance with this
          Section 24, the Company shall take all such action as may
          be necessary to authorize additional shares of Common
          Stock for issuance upon exchange of the Rights.

                         (e)  The Company shall not be required to
          issue fractions of shares of Common Stock or to distrib-
          ute certificates which evidence fractional shares of
          Common Stock.  In lieu of such fractional shares of
          Common Stock, there shall be paid to each registered
          holder of a Rights Certificate with regard to which such
          fractional shares of Common Stock would otherwise be
          issuable an amount in cash equal to the same fraction of
          the current market value of a whole share of Common
          Stock.  For the purposes of this subsection (e), the
          current market value of a whole share of Common Stock
          shall be the closing price of the Common Stock (as deter-
          mined pursuant to the second sentence of Section 11(d)(i)
          hereof) for the Trading Day immediately prior to the date
          of exchange pursuant to this Section 24.

                    Section 25.  Notice of Certain Events.  

                         (a)  In case the Company shall propose, at
          any time after the Distribution Date, (i) to pay any
          dividend payable in stock of any class to the holders of
          Preferred Stock or to make any other distribution to the
          holders of Preferred Stock (other than a regular quarter-
          ly cash dividend out of earnings or retained earnings of
          the Company), or (ii) to offer to the holders of
          Preferred Stock rights or warrants to subscribe for or to
          purchase any additional shares of Preferred Stock or
          shares of stock of any class or any other securities,
          rights or options, or (iii) to effect any reclassifica-
          tion of its Preferred Stock (other than a reclassifica-
          tion involving only the subdivision of outstanding shares
          of Preferred Stock), or (iv) to effect any consolidation
          or merger into or with any other Person (other than a
          Subsidiary of the Company in a transaction which complies
          with Section 11(o) hereof), or to effect any sale or
          other transfer (or to permit one or more of its Subsid-
          iaries to effect any sale or other transfer), in one
          transaction or a series of related transactions, of more
          than fifty percent (50%) of the assets or earning power
          of the Company and its Subsidiaries (taken as a whole) to
          any other Person or Persons (other than the Company
          and/or any of its Subsidiaries in one or more transac-
          tions each of which complies with Section 11(o) hereof),
          or (v) to effect the liquidation, dissolution or winding
          up of the Company, then, in each such case, the Company
          shall give to each holder of a Rights Certificate, to the
          extent feasible and in accordance with Section 26 hereof,
          a notice of such proposed action, which shall specify the
          record date for the purposes of such stock dividend,
          distribution of rights or warrants, or the date on which
          such reclassification, consolidation, merger, sale,
          transfer, liquidation, dissolution, or winding up is to
          take place and the date of participation therein by the
          holders of the shares of Preferred Stock, if any such
          date is to be fixed, and such notice shall be so given in
          the case of any action covered by clause (i) or (ii)
          above at least twenty (20) days prior to the record date
          for determining holders of the shares of Preferred Stock
          for purposes of such action, and in the case of any such
          other action, at least twenty (20) days prior to the date
          of the taking of such proposed action or the date of
          participation therein by the holders of the shares of
          Preferred Stock whichever shall be the earlier. 

                         (b)  In case any of the events set forth
          in Section 11(a)(ii) hereof shall occur, then, in any
          such case, (i) the Company shall as soon as practicable
          thereafter give to each holder of a Rights Certificate,
          to the extent feasible and in accordance with Section 26
          hereof, a notice of the occurrence of such event, which
          shall specify the event and the consequences of the event
          to holders of Rights under Section 11(a)(ii) hereof, and
          (ii) all references in the preceding subsection to
          Preferred Stock shall be deemed thereafter to refer to
          Common Stock and/or, if appropriate, other securities. 

                    Section 26.  Notices.  Notices or demands
          authorized by this Agreement to be given or made by the
          Rights Agent or by the holder of any Rights Certificate
          to or on the Company shall be sufficiently given or made
          if sent by first-class mail, postage prepaid, addressed
          (until another address is filed in writing with the
          Rights Agent) as follows: 

                         Lam Research Corporation
                         4650 Cushing Parkway
                         Fremont, California  94538
                         Attention:  Richard H. Lovgren
                                     General Counsel and
                                     Corporate Secretary

          Subject to the provisions of Section 21 hereof, any
          notice or demand authorized by this Agreement to be given
          or made by the Company or by the holder of any Rights
          Certificate to or on the Rights Agent shall be suffi-
          ciently given or made if sent by first-class mail, post-
          age prepaid, addressed (until another address is filed in
          writing with the Company) as follows:

                         ChaseMellon Shareholder Services, L.L.C.
                         50 California Street, 10th Floor
                         San Francisco, California 94111

          Notices or demands authorized by this Agreement to be
          given or made by the Company or the Rights Agent to the
          holder of any Rights Certificate (or, if prior to the
          Distribution Date, to the holder of certificates
          representing shares of Common Stock) shall be sufficient-
          ly given or made if sent by first-class mail, postage
          prepaid, addressed to such holder at the address of such
          holder as shown on the registry books of the Company. 

                    Section 27.  Supplements and Amendments.  Prior
          to the Distribution Date, the Company and the Rights
          Agent shall, if the Company so directs, supplement or
          amend any provision of this Agreement without the approv-
          al of any holders of certificates representing shares of
          Common Stock.  From and after the Distribution Date and
          subject to the penultimate sentence of this Section 27,
          the Company and the Rights Agent shall, if the Company so
          directs, supplement or amend this Agreement without the
          approval of any holders of Rights Certificates in order
          (i) to cure any ambiguity, (ii) to correct or supplement
          any provision contained herein which may be defective or
          inconsistent with any other provisions herein, (iii) to
          shorten or lengthen any time period hereunder or (iv) to
          change or supplement the provisions hereunder in any
          manner which the Company may deem necessary or desirable
          and which shall not adversely affect the interests of the
          holders of Rights Certificates (other than an Acquiring
          Person or an Affiliate or Associate of an Acquiring
          Person); provided, however, this Agreement may not be
          supplemented or amended to lengthen, pursuant to clause
          (iii) of this sentence, (A) a time period relating to
          when the Rights may be redeemed at such time as the
          Rights are not then redeemable or (B) any other time
          period unless such lengthening is for the purpose of
          protecting, enhancing or clarifying the rights of, and/or
          the benefits to, the holders of Rights.  Upon the
          delivery of a certificate from an appropriate officer of
          the Company which states that the proposed supplement or
          amendment is in compliance with the terms of this Section
          27, the Rights Agent shall execute such supplement or
          amendment.  Prior to the Distribution Date, the interests
          of the holders of Rights shall be deemed coincident with
          the interests of the holders of Common Stock. 

                    Section 28.  Successors.  All the covenants and
          provisions of this Agreement by or for the benefit of the
          Company or the Rights Agent shall bind and inure to the
          benefit of their respective successors and assigns
          hereunder. 

                    Section 29.  Determinations and Actions by the
          Board, etc.  For all purposes of this Agreement, any
          calculation of the number of shares of Common Stock
          outstanding at any particular time, including for purpos-
          es of determining the particular percentage of such
          outstanding shares of Common Stock of which any Person is
          the Beneficial Owner, shall be made in accordance with
          the last sentence of Rule 13d-3(d)(1)(i) of the General
          Rules and Regulations under the Exchange Act.  The Board
          shall have the exclusive power and authority to adminis-
          ter this Agreement and to exercise all rights and powers
          specifically granted to the Board or to the Company, or
          as may be necessary or advisable in the administration of
          this Agreement, including, without limitation, the right
          and power to (i) interpret the provisions of this Agree-
          ment, and (ii) make all determinations deemed necessary
          or advisable for the administration of this Agreement
          (including a determination to redeem or not redeem the
          Rights or to amend this Agreement and any determination
          as to whether actions of any Person shall be such as to
          cause such Person to beneficially own shares held by
          another Person).  All such actions, calculations, inter-
          pretations and determinations (including, for purposes of
          clause (y) below, all omissions with respect to the
          foregoing) which are done or made by the Board in good
          faith, shall (x) be final, conclusive and binding on the
          Company, the Rights Agent, the holders of the Rights and
          all other parties, and (y) not subject the Board or any
          of its members to any liability to the holders of the
          Rights. 

                    Section 30.  Benefits of this Agreement. 
          Nothing in this Agreement shall be construed to give to
          any Person other than the Company, the Rights Agent and
          the registered holders of the Rights Certificates (and,
          prior to the Distribution Date, registered holders of the
          Common Stock) any legal or equitable right, remedy or
          claim under this Agreement; but this Agreement shall be
          for the sole and exclusive benefit of the Company, the
          Rights Agent and the registered holders of the Rights
          Certificates (and, prior to the Distribution Date,
          registered holders of the Common Stock).

                    Section 31.  Severability.  If any term,
          provision, covenant or restriction of this Agreement is
          held by a court of competent jurisdiction or other
          authority to be invalid, void or unenforceable, the
          remainder of the terms, provisions, covenants and
          restrictions of this Agreement shall remain in full force
          and effect and shall in no way be affected, impaired or
          invalidated; provided, however, that notwithstanding
          anything in this Agreement to the contrary, if any such
          term, provision, covenant or restriction is held by such
          court or authority to be invalid, void or unenforceable
          and the Board determines in its good faith judgment that
          severing the invalid language from this Agreement would
          adversely affect the purpose or effect of this Agreement,
          the right of redemption set forth in Section 23 hereof
          shall be reinstated and shall not expire until the close
          of business on the tenth Business Day following the date
          of such determination by the Board.

                    Section 32.  Governing Law.  This Agreement,
          each Right and each Rights Certificate issued hereunder
          shall be deemed to be a contract made under the laws of
          the State of Delaware and for all purposes shall be
          governed by and construed in accordance with the laws of
          such State applicable to contracts made and to be per-
          formed entirely within such State.

                    Section 33.  Counterparts.  This Agreement may
          be executed in any number of counterparts and each of
          such counterparts shall for all purposes be deemed to be
          an original, and all such counterparts shall together
          constitute but one and the same instrument. 

                    Section 34.  Descriptive Headings.  Descriptive
          headings of the several sections of this Agreement are
          inserted for convenience only and shall not control or
          affect the meaning or construction of any of the
          provisions hereof. 


                    IN WITNESS WHEREOF, the parties hereto have
          caused this Agreement to be executed by their duly autho-
          rized representatives as of the day and year first above
          written.

                              LAM RESEARCH CORPORATION

                              By /s/ Roger D. Emerick
                                 ________________________________
                                 Name:  Roger D. Emerick
                                 Title: Chief Executive Officer

                              CHASEMELLON SHAREHOLDER SERVICES, L.L.C.

                              By /s/ Paul Collins
                                 ________________________________
                                 Name:  Paul Collins
                                 Title: Assistant Vice President



                                                          Exhibit A

                                   FORM OF
                   CERTIFICATE OF DESIGNATION, PREFERENCES
                        AND RIGHTS OF SERIES A JUNIOR
                        PARTICIPATING PREFERRED STOCK

                                     OF

                          LAM RESEARCH CORPORATION

           Pursuant to Section 151 of the General Corporation Law
                          of the State of Delaware
           
           
                    The undersigned officers of Lam Research Cor-
          poration, a corporation organized and existing under the
          General Corporation Law of the State of Delaware, in
          accordance with the provisions of Section 103 thereof,
          DO HEREBY CERTIFY: 

                    That pursuant to the authority conferred upon
          the Board of Directors by the Certificate of Incorpora-
          tion of the said Corporation, the said Board of Direc-
          tors on January 23, 1997, adopted the following resolu-
          tion creating a series of one hundred thousand (100,000)
          shares of Preferred Stock designated as "Series A Junior
          Participating Preferred Stock:"

                    RESOLVED, that pursuant to the authority vest-
          ed in the Board of Directors of this Corporation in
          accordance with the provisions of its Certificate of
          Incorporation, a series of Preferred Stock of the Corpo-
          ration be and it hereby is created, and that the desig-
          nation and amount thereof and the voting powers, prefer-
          ences and relative, participating, optional and other
          special rights of the shares of such series, and the
          qualifications, limitations or restrictions thereof are
          as follows: 

                    Section 1.  Designation and Amount.  The
          shares of such series shall be designated as "Series A
          Junior Participating Preferred Stock" and the number of
          shares constituting such series shall be one hundred
          thousand (100,000).
           
                    Section 2.  Dividends and Distributions. 
           
                    (A)  The holders of shares of Series A Junior
          Participating Preferred Stock shall be entitled to
          receive, when, as and if declared by the Board of Direc-
          tors out of funds legally available for the purpose,
          quarterly dividends payable in cash on the last day of
          March, June, September and December in each year (each
          such date being referred to herein as a "Quarterly Divi-
          dend Payment Date"), commencing on the first Quarterly
          Dividend Payment Date after the first issuance of a
          share or fraction of a share of Series A Junior Partici-
          pating Preferred Stock, in an amount per share (rounded
          to the nearest cent) equal to the greater of (a) $.01 or
          (b) subject to the provision for adjustment set forth
          below, one thousand (1,000) times the aggregate per
          share amount of all cash dividends, and one thousand
          (1,000) times the aggregate per share amount (payable in
          kind) of all non-cash dividends or other distributions
          other than a dividend payable in shares of Common Stock
          or a subdivision of the outstanding shares of Common
          Stock (by reclassification or otherwise), declared on
          the Common Stock, par value $.001 per share, of the
          Corporation (the "Common Stock") since the immediately
          preceding Quarterly Dividend Payment Date, or, with
          respect to the first Quarterly Dividend Payment Date,
          since the first issuance of any share or fraction of a
          share of Series A Junior Participating Preferred Stock. 
          In the event the Corporation shall at any time after
          January 23, 1997 (the "Rights Dividend Declaration
          Date") (i) declare any dividend on Common Stock payable
          in shares of Common Stock, (ii) subdivide the outstand-
          ing Common Stock or (iii) combine the outstanding Common
          Stock into a smaller number of shares, then in each such
          case the amount to which holders of shares of Series A
          Junior Participating Preferred Stock were entitled imme-
          diately prior to such event under clause (b) of the
          preceding sentence shall be adjusted by multiplying such
          amount by a fraction the numerator of which is the num-
          ber of shares of Common Stock outstanding immediately
          after such event and the denominator of which is the
          number of shares of Common Stock that were outstanding
          immediately prior to such event.

                    (B)  The Corporation shall declare a dividend
          or distribution on the Series A Junior Participating
          Preferred Stock as provided in subsection (A) above
          immediately after it declares a dividend or distribution
          on the Common Stock (other than a dividend payable in
          shares of Common Stock); provided that, in the event no
          dividend or distribution shall have been declared on the
          Common Stock during the period between any Quarterly
          Dividend Payment Date and the next subsequent Quarterly
          Dividend Payment Date, a dividend of $.01 per share on
          the Series A Junior Participating Preferred Stock shall
          nevertheless be payable on such subsequent Quarterly
          Dividend Payment Date.

                    (C)  Dividends shall begin to accrue and be
          cumulative on outstanding shares of Series A Junior
          Participating Preferred Stock from the Quarterly Divi-
          dend Payment Date next preceding the date of issue of
          such shares of Series A Junior Participating Preferred
          Stock, unless the date of issue of such shares is prior
          to the record date for the first Quarterly Dividend
          Payment Date, in which case dividends on such shares
          shall begin to accrue from the date of issue of such
          shares, or unless the date of issue is a Quarterly
          Dividend Payment Date or is a date after the record date
          for the determination of holders of shares of Series A
          Junior Participating Preferred Stock entitled to receive
          a quarterly dividend and before such Quarterly Dividend
          Payment Date, in either of which events such dividends
          shall begin to accrue and be cumulative from such
          Quarterly Dividend Payment Date.  Accrued but unpaid
          dividends shall not bear interest.  Dividends paid on
          the shares of Series A Junior Participating Preferred
          Stock in an amount less than the total amount of such
          dividends at the time accrued and payable on such shares
          shall be allocated pro rata on a share-by-share basis
          among all such shares at the time outstanding.  The
          Board of Directors may fix a record date for the deter-
          mination of holders of shares of Series A Junior Partic-
          ipating Preferred Stock entitled to receive payment of a
          dividend or distribution declared thereon, which record
          date shall be no more than 30 days prior to the date
          fixed for the payment thereof. 

                    Section 3.  Voting Rights.  The holders of
          shares of Series A Junior Participating Preferred Stock
          shall have the following voting rights: 

                    (A)  Subject to the provision for adjustment
          set forth below, each share of Series A Junior Partici-
          pating Preferred Stock shall entitle the holder thereof
          to one thousand (1,000) votes on all matters submitted
          to a vote of the stockholders of the Corporation.  In
          the event the Corporation shall at any time after the
          Rights Dividend Declaration Date (i) declare any divi-
          dend on Common Stock payable in shares of Common Stock,
          (ii) subdivide the outstanding Common Stock or (iii)
          combine the outstanding Common Stock into a smaller
          number of shares, then in each such case the number of
          votes per share to which holders of shares of Series A
          Junior Participating Preferred Stock were entitled imme-
          diately prior to such event shall be adjusted by multi-
          plying such number by a fraction the numerator of which
          is the number of shares of Common Stock outstanding
          immediately after such event and the denominator of
          which is the number of shares of Common Stock that were
          outstanding immediately prior to such event. 

                    (B)  Except as otherwise provided herein or by
          law, the holders of shares of Series A Junior Partici-
          pating Preferred Stock and the holders of shares of
          Common Stock shall vote together as one class on all
          matters submitted to a vote of stockholders of the Cor-
          poration. 

                    (C)  (i)  If at any time dividends on any
               Series A Junior Participating Preferred Stock
               shall be in arrears in an amount equal to six
               (6) quarterly dividends thereon, the occur-
               rence of such contingency shall mark the be-
               ginning of a period (herein called a "default
               period") which shall extend until such time
               when all accrued and unpaid dividends for all
               previous quarterly dividend periods and for
               the current quarterly dividend period on all
               shares of Series A Junior Participating Pre-
               ferred Stock then outstanding shall have been
               declared and paid or set apart for payment. 
               During each default period, all holders of
               Preferred Stock (including holders of the Se-
               ries A Junior Participating Preferred Stock)
               with dividends in arrears in an amount equal
               to or greater than six (6) quarterly dividends
               thereon, voting as a class, irrespective of
               series, shall have the right to elect two (2)
               Directors. 

                         (ii)  During any default period,
               such voting right of the holders of Series A
               Junior Participating Preferred Stock may be
               exercised initially at a special meeting
               called pursuant to subsection (iii) of this
               Section 3(C) or at any annual meeting of
               stockholders, and thereafter at annual meet-
               ings of stockholders, provided that such vot-
               ing right shall not be exercised unless the
               holders of ten percent (10%) in number of
               shares of Preferred Stock outstanding shall be
               present in person or by proxy.  The absence of
               a quorum of the holders of Common Stock shall
               not affect the exercise by the holders of Pre-
               ferred Stock of such voting right.  At any
               meeting at which the holders of Preferred
               Stock shall exercise such voting right ini-
               tially during an existing default period, they
               shall have the right, voting as a class, to
               elect Directors to fill such vacancies, if
               any, in the Board of Directors as may then
               exist up to two (2) Directors or, if such
               right is exercised at an annual meeting, to
               elect two (2) Directors.  If the number which
               may be so elected at any special meeting does
               not amount to the required number, the holders
               of the Preferred Stock shall have the right to
               make such increase in the number of Directors
               as shall be necessary to permit the election
               by them of the required number.  After the
               holders of the Preferred Stock shall have ex-
               ercised their right to elect Directors in any
               default period and during the continuance of
               such period, the number of Directors shall not
               be increased or decreased except by vote of
               the holders of Preferred Stock as herein pro-
               vided or pursuant to the rights of any equity
               securities ranking senior to or pari passu
               with the Series A Junior Participating Pre-
               ferred Stock. 
           
                         (iii)  Unless the holders of Pre-
               ferred Stock shall, during an existing default
               period, have previously exercised their right
               to elect Directors, the Board of Directors may
               order, or any stockholder or stockholders own-
               ing in the aggregate not less than ten percent
               (10%) of the total number of shares of Pre-
               ferred Stock outstanding, irrespective of se-
               ries, may request, the calling of a special
               meeting of the holders of Preferred Stock,
               which meeting shall thereupon be called by the
               President, a Vice President or the Secretary
               of the Corporation.  Notice of such meeting
               and of any annual meeting at which holders of
               Preferred Stock are entitled to vote pursuant
               to this subsection (C)(iii) shall be given to
               each holder of record of Preferred Stock by
               mailing a copy of such notice to him at his
               last address as the same appears on the books
               of the Corporation.  Such meeting shall be
               called for a time not earlier than 20 days and
               not later than 60 days after such order or
               request or in default of the calling of such
               meeting within 60 days after such order or
               request, such meeting may be called on similar
               notice by any stockholder or stockholders own-
               ing in the aggregate not less than ten percent
               (10%) of the total number of shares of Pre-
               ferred Stock outstanding.  Notwithstanding the
               provisions of this subsection (C)(iii), no
               such special meeting shall be called during
               the period within 60 days immediately preced-
               ing the date fixed for the next annual meeting
               of the stockholders. 
           
                         (iv)  In any default period, the
               holders of Common Stock, and other classes of
               stock of the Corporation if applicable, shall
               continue to be entitled to elect the whole
               number of Directors until the holders of Pre-
               ferred Stock shall have exercised their right
               to elect two (2) Directors voting as a class,
               after the exercise of which right (x) the Di-
               rectors so elected by the holders of Preferred
               Stock shall continue in office until their
               successors shall have been elected by such
               holders or until the expiration of the default
               period, and (y) any vacancy in the Board of
               Directors may (except as provided in subsec-
               tion (C)(ii) of this Section 3) be filled by
               vote of a majority of the remaining Directors
               theretofore elected by the holders of the
               class of stock which elected the Director
               whose office shall have become vacant.  Refer-
               ences in this subsection (C) to Directors
               elected by the holders of a particular class
               of stock shall include Directors elected by
               such Directors to fill vacancies as provided
               in clause (y) of the foregoing sentence. 
           
                         (v)  Immediately upon the expiration
               of a default period, (x) the right of the
               holders of Preferred Stock as a class to elect
               Directors shall cease, (y) the term of any
               Directors elected by the holders of Preferred
               Stock as a class shall terminate and (z) the
               number of Directors shall be such number as
               may be provided for in the certificate of in-
               corporation or by-laws irrespective of any
               increase made pursuant to the provisions of
               subsection (C)(ii) of this Section 3 (such
               number being subject, however, to change
               thereafter in any manner provided by law or in
               the certificate of incorporation or by-laws). 
               Any vacancies in the Board of Directors ef-
               fected by the provisions of clauses (y) and
               (z) in the preceding sentence may be filled by
               a majority of the remaining Directors. 

                    (D)  Except as set forth herein, holders of
          Series A Junior Participating Preferred Stock shall have
          no special voting rights and their consent shall not be
          required (except to the extent they are entitled to vote
          with holders of Common Stock as set forth herein) for
          taking any corporate action. 

                    Section 4.  Certain Restrictions. 

                    (A)  Whenever quarterly dividends or other
          dividends or distributions payable on the Series A Ju-
          nior Participating Preferred Stock as provided in Sec-
          tion 2 are in arrears, thereafter and until all accrued
          and unpaid dividends and distributions, whether or not
          declared, on shares of Series A Junior Participating
          Preferred Stock outstanding shall have been paid in
          full, the Corporation shall not: 
           
                              (i)  declare or pay dividends
               on, make any other distributions on, or redeem
               or purchase or otherwise acquire for consider-
               ation any shares of stock ranking junior (ei-
               ther as to dividends or upon liquidation, dis-
               solution or winding up) to the Series A Junior
               Participating Preferred Stock; 

                              (ii)  declare or pay dividends
               on or make any other distributions on any
               shares of stock ranking on a parity (either as
               to dividends or upon liquidation, dissolution
               or winding up) with the Series A Junior Par-
               ticipating Preferred Stock, except dividends
               paid ratably on the Series A Junior Partici-
               pating Preferred Stock and all such parity
               stock on which dividends are payable or in
               arrears in proportion to the total amounts to
               which the holders of all such shares are then
               entitled; 

                              (iii)  redeem or purchase or
               otherwise acquire for consideration shares of
               any stock ranking on a parity (either as to
               dividends or upon liquidation, dissolution or
               winding up) with the Series A Junior Partici-
               pating Preferred Stock, provided that the Cor-
               poration may at any time redeem, purchase or
               otherwise acquire shares of any such parity
               stock in exchange for shares of any stock of
               the Corporation ranking junior (either as to
               dividends or upon dissolution, liquidation or
               winding up) to the Series A Junior Participat-
               ing Preferred Stock; or
           
                              (iv)  purchase or otherwise
               acquire for consideration any shares of Series
               A Junior Participating Preferred Stock, or any
               shares of stock ranking on a parity with the
               Series A Junior Participating Preferred Stock,
               except in accordance with a purchase offer
               made in writing or by publication (as deter-
               mined by the Board of Directors) to all hold-
               ers of such shares upon such terms as the
               Board of Directors, after consideration of the
               respective annual dividend rates and other
               relative rights and preferences of the respec-
               tive series and classes, shall determine in
               good faith will result in fair and equitable
               treatment among the respective series or
               classes. 
           
                    (B)  The Corporation shall not permit any
          subsidiary of the Corporation to purchase or otherwise
          acquire for consideration any shares of stock of the
          Corporation unless the Corporation could, under subsec-
          tion (A) of this Section 4, purchase or otherwise ac-
          quire such shares at such time and in such manner. 
           
                    Section 5.  Reacquired Shares.  Any shares of
          Series A Junior Participating Preferred Stock purchased
          or otherwise acquired by the Corporation in any manner
          whatsoever shall be retired and cancelled promptly after
          the acquisition thereof.  All such shares shall upon
          their cancellation become authorized but unissued shares
          of Preferred Stock and may be reissued as part of a new
          series of Preferred Stock to be created by resolution or
          resolutions of the Board of Directors, subject to the
          conditions and restrictions on issuance set forth here-
          in. 
                    Section 6.  Liquidation, Dissolution or Wind-
          ing Up.  (A)  Upon any liquidation (voluntary or other-
          wise), dissolution or winding up of the Corporation, no
          distribution shall be made to the holders of shares of
          stock ranking junior (either as to dividends or upon
          liquidation, dissolution or winding up) to the Series A
          Junior Participating Preferred Stock unless, prior
          thereto, the holders of shares of Series A Junior Par-
          ticipating Preferred Stock shall have received an amount
          equal to $[one thousand times the Purchase Price] per
          share of Series A Junior Participating Preferred Stock,
          plus an amount equal to accrued and unpaid dividends and
          distributions thereon, whether or not declared, to the
          date of such payment (the "Series A Liquidation Prefer-
          ence").  Following the payment of the full amount of the
          Series A Liquidation Preference, no additional distribu-
          tions shall be made to the holders of shares of Series A
          Junior Participating Preferred Stock unless, prior
          thereto, the holders of shares of Common Stock shall
          have received an amount per share (the "Common Adjust-
          ment") equal to the quotient obtained by dividing (i)
          the Series A Liquidation Preference by (ii) one thousand
          (1,000) (as appropriately adjusted as set forth in sub-
          section (C) below to reflect such events as stock
          splits, stock dividends and recapitalizations with
          respect to the Common Stock) (such number in clause
          (ii), the "Adjustment Number").  Following the payment
          of the full amount of the Series A Liquidation Prefer-
          ence and the Common Adjustment in respect of all out-
          standing shares of Series A Junior Participating Pre-
          ferred Stock and Common Stock, respectively, holders of
          Series A Junior Participating Preferred Stock and hold-
          ers of shares of Common Stock shall receive their rat-
          able and proportionate share of the remaining assets to
          be distributed in the ratio of the Adjustment Number to
          1 with respect to such Preferred Stock and Common Stock,
          on a per share basis, respectively. 

                    (B)  In the event, however, that there are not
          sufficient assets available to permit payment in full of
          the Series A Liquidation Preference and the liquidation
          preferences of all other series of preferred stock, if
          any, which rank on a parity with the Series A Junior
          Participating Preferred Stock, then such remaining as-
          sets shall be distributed ratably to the holders of such
          parity shares in proportion to their respective liquida-
          tion preferences.  In the event, however, that there are
          not sufficient assets available to permit payment in
          full of the Common Adjustment, then such remaining as-
          sets shall be distributed ratably to the holders of
          Common Stock. 

                    (C)  In the event the Corporation shall at any
          time after the Rights Dividend Declaration Date (i)
          declare any dividend on Common Stock payable in shares
          of Common Stock, (ii) subdivide the outstanding Common
          Stock, or (iii) combine the outstanding Common Stock
          into a smaller number of shares, then in each such case
          the Adjustment Number in effect immediately prior to
          such event shall be adjusted by multiplying such Adjust-
          ment Number by a fraction the numerator of which is the
          number of shares of Common Stock outstanding immediately
          after such event and the denominator of which is the
          number of shares of Common Stock that were outstanding
          immediately prior to such event. 

                    Section 7.  Consolidation, Merger, etc.  In
          case the Corporation shall enter into any consolidation,
          merger, combination or other transaction in which the
          shares of Common Stock are exchanged for or changed into
          other stock or securities, cash and/or any other proper-
          ty, then in any such case the shares of Series A Junior
          Participating Preferred Stock shall at the same time be
          similarly exchanged or changed in an amount per share
          (subject to the provision for adjustment set forth be-
          low) equal to one thousand (1,000) times the aggregate
          amount of stock, securities, cash and/or any other
          property (payable in kind), as the case may be, into
          which or for which each share of Common Stock is changed
          or exchanged.  In the event the Corporation shall at any
          time after the Rights Dividend Declaration Date (i)
          declare any dividend on Common Stock payable in shares
          of Common Stock, (ii) subdivide the outstanding Common
          Stock, or (iii) combine the outstanding Common Stock
          into a smaller number of shares, then in each such case
          the amount set forth in the preceding sentence with
          respect to the exchange or change of shares of Series A
          Junior Participating Preferred Stock shall be adjusted
          by multiplying such amount by a fraction the numerator
          of which is the number of shares of Common Stock out-
          standing immediately after such event and the denomina-
          tor of which is the number of shares of Common Stock
          that were outstanding immediately prior to such event. 

                    Section 8.  No Redemption.  The shares of
          Series A Junior Participating Preferred Stock shall not
          be redeemable.

                    Section 9.  Amendment.  The Certificate of
          Incorporation of the Corporation shall not be further
          amended in any manner which would materially alter or
          change the powers, preferences or special rights of the
          Series A Junior Participating Preferred Stock so as to
          affect them adversely without the affirmative vote of
          the holders of a majority or more of the outstanding
          shares of Series A Junior Participating Preferred Stock,
          voting separately as a class. 

                    Section 10.  Fractional Shares.  Series A
          Junior Participating Preferred Stock may be issued in
          fractions of a share which shall entitle the holder, in
          proportion to such holder's fractional shares, to exer-
          cise voting rights, receive dividends, participate in
          distributions and to have the benefit of all other
          rights of holders of Series A Junior Participating Pre-
          ferred Stock.


                    IN WITNESS WHEREOF, we have executed and
          subscribed this Certificate and do affirm the foregoing
          as true under the penalties of perjury this [  ] day of
          January 1997. 

                              LAM RESEARCH CORPORATION

                              __________________________________
                              Name: 
                              Title:

          Attest: 

          ____________________________
          Secretary 


                                                          Exhibit B

          [Form of Rights Certificate]

          Certificate No. R-                        ________ Rights

          NOT EXERCISABLE AFTER JANUARY 31, 2007 OR EARLIER IF
          REDEEMED BY THE COMPANY.  THE RIGHTS ARE SUBJECT TO
          REDEMPTION, AT THE OPTION OF THE COMPANY, AT $.001 PER
          RIGHT ON THE TERMS SET FORTH IN THE RIGHTS AGREEMENT. 
          UNDER CERTAIN CIRCUMSTANCES, RIGHTS BENEFICIALLY OWNED
          BY AN ACQUIRING PERSON (AS SUCH TERM IS DEFINED IN THE
          RIGHTS AGREEMENT) AND ANY SUBSEQUENT HOLDER OF SUCH
          RIGHTS MAY BECOME NULL AND VOID.  [THE RIGHTS REPRESENT-
          ED BY THIS RIGHTS CERTIFICATE ARE OR WERE BENEFICIALLY
          OWNED BY A PERSON WHO WAS OR BECAME AN ACQUIRING PERSON
          OR AN AFFILIATE OR ASSOCIATE OF AN ACQUIRING PERSON (AS
          SUCH TERMS ARE DEFINED IN THE RIGHTS AGREEMENT).  AC-
          CORDINGLY, THIS RIGHTS CERTIFICATE AND THE RIGHTS REPRE-
          SENTED HEREBY MAY BECOME NULL AND VOID IN THE CIRCUM-
          STANCES SPECIFIED IN SECTION 7(e) OF THE RIGHTS AGREE-
          MENT.]*

          Rights Certificate

                          Lam Research Corporation

                    This certifies that                      , or
          registered assigns, is the registered owner of the num-
          ber of Rights set forth above, each of which entitles
          the owner thereof, subject to the terms, provisions and
          conditions of the Rights Agreement, dated as of January
          23, 1997 (the "Rights Agreement"), between Lam Research
          Corporation, a Delaware corporation (the "Company"), and
          ChaseMellon Shareholder Services, L.L.C., a New Jersey
          limited liability company (the "Rights Agent"), to pur-
          chase from the Company at any time prior to 5:00 P.M.
          (New York City time) on January 31, 2007 at the office
          or offices of the Rights Agent designated for such pur-
          pose, or its successors as Rights Agent, one one-thou-
          sandth of a fully paid, non-assessable share of Series A
          Junior Participating Preferred Stock (the "Preferred
          Stock") of the Company, at a purchase price of $[250]
          per one one-thousandth of a share (the "Purchase
          Price"), upon presentation and surrender of this Rights
          Certificate with the Form of Election to Purchase and
          related Certificate duly executed.  The number of Rights
          evidenced by this Rights Certificate (and the number of
          shares which may be purchased upon exercise thereof) set
          forth above, and the Purchase Price per share set forth
          above, are the number and Purchase Price as of [date]
          based on the Preferred Stock and Common Stock as consti-
          tuted at such date.  The Company reserves the right to
          require prior to the occurrence of a Triggering Event

          _________________________
          *    The portion of the legend in brackets shall be inserted only
               if applicable and shall replace the preceding sentence.


          (as such term is defined in the Rights Agreement) that a
          number of Rights be exercised so that only whole shares
          of Preferred Stock will be issued.

                    Upon the occurrence of a Section 11(a)(ii)
          Event (as such term is defined in the Rights Agreement),
          if the Rights evidenced by this Rights Certificate are
          beneficially owned by (i) an Acquiring Person or an
          Affiliate or Associate of any such Acquiring Person (as
          such terms are defined in the Rights Agreement), (ii) a
          transferee of any such Acquiring Person, Associate or
          Affiliate, or (iii) under certain circumstances speci-
          fied in the Rights Agreement, a transferee of a Person
          (as such term is defined in the Rights Agreement) who,
          after such transfer, became an Acquiring Person, or an
          Affiliate or Associate of an Acquiring Person, such
          Rights shall become null and void and no holder hereof
          shall have any right with respect to such Rights from
          and after the occurrence of such Section 11(a)(ii)
          Event.

                    As provided in the Rights Agreement, the Pur-
          chase Price and the number and kind of shares of Pre-
          ferred Stock or other securities that may be purchased
          upon the exercise of the Rights evidenced by this Rights
          Certificate are subject to modification and adjustment
          upon the happening of certain events, including Trigger-
          ing Events.

                    This Rights Certificate is subject to all of
          the terms, provisions and conditions of the Rights
          Agreement, which terms, provisions and conditions are
          hereby incorporated herein by reference and made a part
          hereof and to which Rights Agreement reference is hereby
          made for a full description of the rights, limitations
          of rights, obligations, duties and immunities hereunder
          of the Rights Agent, the Company and the holders of the
          Rights Certificates, which limitations of rights include
          the temporary suspension of the exercisability of such
          Rights under the specific circumstances set forth in the
          Rights Agreement.  Copies of the Rights Agreement are on
          file at the above-mentioned office of the Rights Agent
          and are also available upon written request to the
          Rights Agent.

                    This Rights Certificate, with or without other
          Rights Certificates, upon surrender at the principal
          office or offices of the Rights Agent designated for
          such purpose, may be exchanged for another Rights Cer-
          tificate or Rights Certificates of like tenor and date
          evidencing Rights entitling the holder to purchase a
          like aggregate number of one one-thousandths of a share
          of Preferred Stock as the Rights evidenced by the Rights
          Certificate or Rights Certificates surrendered shall
          have entitled such holder to purchase.  If this Rights
          Certificate shall be exercised in part, the holder shall
          be entitled to receive upon surrender hereof another
          Rights Certificate or Rights Certificates for the number
          of whole Rights not exercised.

                    Subject to the provisions of the Rights Agree-
          ment, the Rights evidenced by this Certificate may be
          redeemed by the Company at its option at a redemption
          price of $.001 per Right at any time prior to the earli-
          er of the close of business on (i) the tenth Business
          Day (as such term is defined in the Rights Agreement)
          following the Stock Acquisition Date (as such time peri-
          od may be extended pursuant to the Rights Agreement) and
          (ii) the Final Expiration Date.  Notwithstanding the
          foregoing, the Rights generally may not be redeemed for
          one hundred eighty (180) days following a change in a
          majority of the Board of Directors of the Company as a
          result of a proxy contest.  In addition, the Rights may
          be exchanged, in whole or in part, for shares of the
          Common Stock, or shares of preferred stock of the Compa-
          ny having essentially the same value or economic rights
          as such shares.  Immediately upon the action of the
          Board of Directors of the Company authorizing any such
          exchange, and without any further action or any notice,
          the Rights (other than Rights which are not subject to
          such exchange) will terminate and the Rights will only
          enable holders to receive the shares issuable upon such
          exchange.  

                    No fractional shares of Preferred Stock will
          be issued upon the exercise of any Right or Rights evi-
          denced hereby (other than fractions which are integral
          multiples of one one-thousandth of a share of Preferred
          Stock, which may, at the election of the Company, be
          evidenced by depositary receipts), but in lieu thereof a
          cash payment will be made, as provided in the Rights
          Agreement.

                    No holder of this Rights Certificate shall be
          entitled to vote or receive dividends or be deemed for
          any purpose the holder of shares of Preferred Stock or
          of any other securities of the Company which may at any
          time be issuable on the exercise hereof, nor shall any-
          thing contained in the Rights Agreement or herein be
          construed to confer upon the holder hereof, as such, any
          of the rights of a stockholder of the Company or any
          right to vote for the election of directors or upon any
          matter submitted to stockholders at any meeting thereof,
          or to give or withhold consent to any corporate action,
          or, to receive notice of meetings or other actions af-
          fecting stockholders (except as provided in the Rights
          Agreement), or to receive dividends or subscription
          rights, or otherwise, until the Right or Rights evi-
          denced by this Rights Certificate shall have been exer-
          cised as provided in the Rights Agreement.

                    This Rights Certificate shall not be valid or
          obligatory for any purpose until it shall have been
          countersigned by the Rights Agent.

                    WITNESS the facsimile signature of the proper
          officers of the Company and its corporate seal.

          Dated as of            ,     

          ATTEST:                       LAM RESEARCH CORPORATION

          ____________________          By_________________________
          Secretary                       Title:



          Countersigned:

          [____________]

          By______________________
             Authorized Signature


                  [Form of Reverse Side of Rights Certificate]

                               FORM OF ASSIGNMENT

                (To be executed by the registered holder if such
              holder desires to transfer the Rights Certificate.)

          FOR VALUE RECEIVED ____________________________________
          hereby sells, assigns and transfers unto ______________
          _______________________________________________________
                 (Please print name and address of transferee)

          this Rights Certificate, together with all right, title and
          interest therein, and does hereby irrevocably constitute
          and appoint _________________ Attorney, to transfer the
          within Rights Certificate on the books of the within-named
          Company, with full power of substitution.

          Dated: ___________________, ____

                                        ___________________________
                                        Signature

          Signature Guaranteed:

                                  Certificate

                    The undersigned hereby certifies by checking the
          appropriate boxes that:

                    (1)  this Rights Certificate [  ] is [  ] is not
          being sold, assigned and transferred by or on behalf of a
          Person who is or was an Acquiring Person or an Affiliate or
          Associate of any such Acquiring Person (as such terms are
          defined pursuant to the Rights Agreement);

                    (2)  after due inquiry and to the best knowledge
          of the undersigned, it [  ] did [  ] did not acquire the
          Rights evidenced by this Rights Certificate from any Person
          who is, was or subsequently became an Acquiring Person or
          an Affiliate or Associate of an Acquiring Person.

          Dated: __________,                 __________________
                                             Signature

          Signature Guaranteed:

                                     NOTICE

                    The signature to the foregoing Assignment and
          Certificate must correspond to the name as written upon the
          face of this Rights Certificate in every particular, with-
          out alteration or enlargement or any change whatsoever.


                          FORM OF ELECTION TO PURCHASE
                    (To be executed if holder desires to
                     exercise Rights represented by the 
                    Rights Certificate.)                

          To:  LAM RESEARCH CORPORATION

                    The undersigned hereby irrevocably elects to
          exercise __________ Rights represented by this Rights
          Certificate to purchase the shares of Preferred Stock
          issuable upon the exercise of the Rights (or such other
          securities of the Company or of any other Person which may
          be issuable upon the exercise of the Rights) and requests
          that certificates for such shares be issued in the name of
          and delivered to:

          Please insert social security
          or other identifying number:  _______  ____  _______

          ___________________________________________________________
                        (Please print name and address)

          ___________________________________________________________

                    If such number of Rights shall not be all the
          Rights evidenced by this Rights Certificate, a new Rights
          Certificate for the balance of such Rights shall be regis-
          tered in the name of and delivered to:

          Please insert social security
          or other identifying number:  _______  ____  _______

          ___________________________________________________________
                        (Please print name and address)

          __________________________________________________________

          Dated:  _____________, ____        ______________________
                                             Signature

          Signature Guaranteed:

                                  Certificate

                    The undersigned hereby certifies by checking the
          appropriate boxes that:

                    (1)  the Rights evidenced by this Rights Certifi-
          cate [ ] are [ ] are not being exercised by or on behalf of
          a Person who is or was an Acquiring Person or an Affiliate
          or Associate of any such Acquiring Person (as such terms
          are defined pursuant to the Rights Agreement);

                    (2)  after due inquiry and to the best knowledge
          of the undersigned, it [ ] did [ ] did not acquire the
          Rights evidenced by this Rights Certificate from any Person
          who is, was or became an Acquiring Person or an Affiliate
          or Associate of an Acquiring Person.

          Dated: ___________, ____      ___________________________
                                        Signature



          Signature Guaranteed:

                                     NOTICE

                    The signature to the foregoing Election to Pur-
          chase and Certificate must correspond to the name as writ-
          ten upon the face of this Rights Certificate in every
          particular, without alteration or enlargement or any change
          whatsoever.


                                                          Exhibit C

                        SUMMARY OF RIGHTS TO PURCHASE
                               PREFERRED STOCK

                    On January 23, 1997, the Board of Directors of
          Lam Research Corporation (the "Company") declared a
          dividend distribution of one Right for each outstanding
          share of Common Stock to stockholders of record at the
          close of business on January 31, 1997 (the "Record
          Date").  Each Right entitles the registered holder to
          purchase from the Company one one-thousandth of a share
          of Series A Junior Participating Preferred Stock, par
          value $.001 per share (the "Preferred Stock"), at a
          Purchase Price of $250, subject to adjustment.  The
          description and terms of the Rights are set forth in a
          Rights Agreement (the "Rights Agreement") between the
          Company and ChaseMellon Shareholder Services, L.L.C., as
          Rights Agent.

                    Initially, the Rights will be attached to all
          Common Stock certificates representing shares then out-
          standing, and no separate Rights Certificates will be
          distributed.  Subject to certain exceptions specified in
          the Rights Agreement, the Rights will separate from the
          Common Stock and a Distribution Date will occur upon the
          earlier of (i) ten business days following a public
          announcement that a person or group of affiliated or
          associated persons (an "Acquiring Person") has acquired
          beneficial ownership of 15% or more of the outstanding
          shares of Common Stock, other than a person or group that
          beneficially owns 15% or more of the outstanding shares
          of Common Stock on January 31, 1997 (the "Stock Acquisi-
          tion Date"), or (ii) ten business days (or such later
          date as the Board of Directors of the Company will deter-
          mine) following the commencement of a tender offer or
          exchange offer that would result in a person or group
          becoming an Acquiring Person.  

                    Until the Distribution Date, (i) the Rights
          will be evidenced by the Common Stock certificates and
          will be transferred with and only with such Common Stock
          certificates, (ii) new Common Stock certificates issued
          after the Record Date will contain a notation incorporat-
          ing the Rights Agreement by reference and (iii) the
          surrender for transfer of any certificates for Common
          Stock outstanding will also constitute the transfer of
          the Rights associated with the Common Stock represented
          by such certificate.  Pursuant to the Rights Agreement,
          the Company reserves the right to require prior to the
          occurrence of a Triggering Event (as defined below) that,
          upon any exercise of Rights, a number of Rights be exer-
          cised so that only whole shares of Preferred Stock will
          be issued.

                    The Rights are not exercisable until the Dis-
          tribution Date and will expire at the close of business
          on January 31, 2007, unless earlier redeemed or exchanged
          by the Company as described below.


                    As soon as practicable after the Distribution
          Date, Rights Certificates will be mailed to holders of
          record of the Common Stock as of the close of business on
          the Distribution Date and, thereafter, the separate
          Rights Certificates alone will represent the Rights. 
          Except as otherwise determined by the Board, only shares
          of Common Stock issued prior to the Distribution Date
          will be issued with Rights.

                    In the event that a person becomes an Acquiring
          Person (except pursuant to an offer for all outstanding
          shares of Common Stock that the disinterested directors
          determine not to be inadequate and to otherwise be in the
          best interests of the Company and its stockholders), each
          holder of a Right will thereafter have the right to
          receive, upon exercise, Common Stock (or, in certain
          circumstances, cash, property or other securities of the
          Company) having a value equal to twice the exercise price
          of the Right.  Notwithstanding any of the foregoing,
          following the occurrence of the event set forth in this
          paragraph, all Rights that are, or (under certain circum-
          stances specified in the Rights Agreement) were, benefi-
          cially owned by any Acquiring Person will be null and
          void.  However, Rights are not exercisable following the
          occurrence of the event set forth above until such time
          as the Rights are no longer redeemable by the Company as
          set forth below.

                    For example, at an exercise price of $250 per
          Right, each Right not owned by an Acquiring Person (or by
          certain related parties) following an event set forth in
          the preceding paragraph would entitle its holder to
          purchase $500 worth of Common Stock (or other consider-
          ation, as noted above) for $250.  Assuming that the
          Common Stock had a per share value of $50 at such time,
          the holder of each valid Right would be entitled to
          purchase ten shares of Common Stock for $250.

                    In the event that, at any time following the
          Stock Acquisition Date, (i) the Company is acquired in a
          merger or other business combination transaction in which
          the Company is not the surviving corporation (other than
          a merger which follows an offer described in the second
          preceding paragraph) or (ii) 50% or more of the Company's
          assets, cash flow or earning power is sold or trans-
          ferred, each holder of a Right (except Rights which
          previously have been voided as set forth above) shall
          thereafter have the right to receive, upon exercise,
          common stock of the acquiring company having a value
          equal to twice the exercise price of the Right.  The
          events set forth in this paragraph and in the second
          preceding paragraph are referred to as the "Triggering
          Events."

                    At any time after a person becomes an Acquiring
          Person and prior to the acquisition by such person or
          group of 50% or more of the outstanding Common Stock, the
          Board may exchange the Rights (other than Rights owned by
          such person or group that have become void), in whole or
          in part, at an exchange ratio of one share of Common
          Stock, or one one-thousandth of a share of Preferred
          Stock (or of a share of a class or series of the
          Company's preferred stock having equivalent rights,
          preferences and privileges), per Right (subject to ad-
          justment).

                    At any time until ten business days following
          the Stock Acquisition Date, the Company may redeem the
          Rights in whole, but not in part, at a price of $.001 per
          Right (payable in cash, Common Stock or other consider-
          ation deemed appropriate by the Board).  Immediately upon
          the action of the Board ordering redemption of the
          Rights, the Rights will terminate and the only right of
          the holders of Rights will be to receive the $.001 re-
          demption price.   Notwithstanding the foregoing, the
          Rights generally may not be redeemed for 180 days follow-
          ing a change in a majority of the Board as a result of a
          proxy contest. 

                    Until a Right is exercised, the holder thereof,
          as such, will have no rights as a stockholder of the
          Company, including, without limitation, the right to vote
          or to receive dividends.  While the distribution of the
          Rights will not be taxable to stockholders or to the
          Company, stockholders may, depending upon the circum-
          stances, recognize taxable income in the event that the
          Rights become exercisable for Common Stock (or other
          consideration) of the Company or for common stock of the
          acquiring company as set forth above.

                    Any of the provisions of the Rights Agreement
          may be amended by the Board prior to the Distribution
          Date.  After the Distribution Date, the provisions of the
          Rights Agreement may be amended by the Board in order to
          cure any ambiguity, to make changes which do not adverse-
          ly affect the interests of holders of Rights, or to
          shorten or lengthen any time period under the Rights
          Agreement; provided, however, that no amendment may be
          made at such time as the Rights are not redeemable.

                    A copy of the Rights Agreement is being filed
          with the Securities and Exchange Commission as an Exhibit
          to a Current Report on Form 8-K.  A copy of the Rights
          Agreement is available free of charge from the Company. 
          This summary description of the Rights does not purport
          to be complete and is qualified in its entirety by refer-
          ence to the Rights Agreement, which is incorporated
          herein by reference.




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