TYLAN GENERAL INC
SC 14D9/A, 1997-01-17
INDUSTRIAL INSTRUMENTS FOR MEASUREMENT, DISPLAY, AND CONTROL
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                      SECURITIES AND EXCHANGE COMMISSION


                            WASHINGTON, D.C. 20549

                                ---------------

   
                               SCHEDULE 14D-9/A
                               (AMENDMENT NO.3)
    


              SOLICITATION/RECOMMENDATION STATEMENT PURSUANT TO
           SECTION 14(d)(4) OF THE SECURITIES EXCHANGE ACT OF 1934

                                ---------------

                             TYLAN GENERAL, INC.
                          (NAME OF SUBJECT COMPANY)

                                ---------------

                             TYLAN GENERAL, INC.
                     (NAME OF PERSON(S) FILING STATEMENT

                                ---------------

                        COMMON STOCK, $.001 PAR VALUE
                        (TITLE OF CLASS OF SECURITIES)

                                ---------------

                                 902 169 101
                    (CUSIP NUMBER OF CLASS OF SECURITIES)

                                ---------------

                               DAVID J. FERRAN
                            CHAIRMAN OF THE BOARD,
                    PRESIDENT AND CHIEF EXECUTIVE OFFICER
                             TYLAN GENERAL, INC.
                           15330 AVENUE OF SCIENCE
                         SAN DIEGO, CALIFORNIA 92128
                                (619) 618-1990
                                      
     (NAME, ADDRESS, AND TELEPHONE NUMBER OF PERSON AUTHORIZED TO RECEIVE
      NOTICE AND COMMUNICATIONS ON BEHALF OF PERSON(S) FILING STATEMENT)

                                  COPIES TO:

       EDWARD S. ROSENTHAL, ESQ.                     D. BRADLEY PECK, ESQ.  
FRIED, FRANK, HARRIS, SHRIVER & JACOBSON            LANCE W. BRIDGES, ESQ. 
   350 SOUTH GRAND AVENUE, 32ND FLOOR                 COOLEY GODWARD LLP   
     LOS ANGELES, CALIFORNIA 90071             4365 EXECUTIVE DRIVE, SUITE 1100
             (213)473-2000                       SAN DIEGO, CALIFORNIA 92121  
                                                        (619) 550-6000        

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        Tylan General, Inc., a Delaware corporation (the "Company"), hereby
amends and supplements its Solicitation/Recommendation Statement on Schedule
14D-9 (the "Schedule 14D-9"), originally filed on December 17, 1996 and
subsequently amended on December 20, 1996 and January 2, 1997, with respect to
the tender offer by MCTG Acquisition Corp., a Delaware corporation ("Bidder
Sub"), a subsidiary of Millipore Corporation, a Massachusetts corporation
("Bidder"), to purchase all of the outstanding Common Stock, $.001 par value per
share (including the associated Series A Junior Participating Preferred Stock
Purchase Rights), of the Company. Capitalized terms herein have the meanings
assigned to them in the Schedule 14D-9, unless otherwise defined herein.

2.  Tender Offer of the Bidder

        Item 2 is hereby amended by deleting the existing second sentence and
replacing it with the following sentence:

        The Offer is being made by the Bidder pursuant to an Agreement and Plan
of Merger entered into on December 16, 1996, as amended on January 15, 1997
(the "Merger Agreement"), between the Company, Millipore and MCTG Acquisition
Corp. ("Bidder Sub").

3.  Identity and Background

        Section 3(b)(ii)(1) of Item 3 is hereby amended by deleting the
existing second sentence of the first paragraph thereof and replacing it with
the following three sentences:

        The following summary of the Merger Agreement is qualified in its
entirety by reference to the Merger Agreement.  A copy of the Agreement and Plan
of Merger, dated December 16, 1996, between the Company, Bidder and Bidder Sub
is attached hereto as Exhibit 99.11.  A copy of the Amendment to Agreement and
Plan of Merger, dated January 15, 1997, between the Company, Bidder and Bidder
Sub is attached hereto as Exhibit 99.16.

        The paragraph under the caption "Stock Options" in Section 3(b)(ii)(1)
of Item 3 is hereby amended by adding the following sentence at the end of the
paragraph:

        The Company shall have the right to amend the terms of any Company
Stock Option which is an incentive stock option satisfying the requirements of
Section 422 of the Internal Revenue Code of 1986, as amended (an "Incentive
Stock Option"), outstanding on the date of the Merger Agreement so that it
would be vested on the scheduled date of termination of the Offer and the
Company shall have the right to amend the terms of any Company Stock Option
which is not an Incentive Stock Option outstanding on the date of the Merger
Agreement so that it would become vested immediately prior to the Effective
Time.

8.  Additional Information to be Furnished

        Item 8 is hereby amended by adding the following paragraph at the end
of the Item:

        On January 9, 1997, the Company was notified by the Premerger Clearance
Office of the Federal Trade Commission that the waiting period applicable to the
consummation of the Merger under the HSR Act was terminated early.

9.  Material to be filed as Exhibits

        Item 9 is hereby amended by the addition of the following Exhibit
hereto:

        99.16           Amendment to Agreement and Plan of Merger, dated
                        January 15, 1997, between the Company, Bidder and
                        Bidder Sub.

    

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                                  SIGNATURE

   
        After reasonable inquiry and to the best of its knowledge and belief,
the undersigned certifies that the information set forth in this amendment is
true, complete and correct.
    

                                        TYLAN GENERAL, INC.



   
                                        By:      /s/ DON E. WHITSON
                                           --------------------------------
                                                     Don E. Whitson
                                           Vice Chairman of the Board and Chief
                                              Administrative Officer
    


   
Date:  January 16, 1997
    


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                                                                EXHIBIT 99.16


                   AMENDMENT TO AGREEMENT AND PLAN OF MERGER


        AMENDMENT dated as of January 15, 1997 (this "Amendment") to AGREEMENT
AND PLAN OF MERGER dated as of December 16, 1996 (the "Merger Agreement") among
Tylan General, Inc., a Delaware corporation (the "Company"), Millipore
Corporation, a Massachusetts corporation (the "Purchaser"), and MCTG Acquisition
Corp., a Delaware corporation ("Purchaser Sub").

                                    RECITALS

        WHEREAS, the Company, the Purchaser and Purchaser Sub are parties to the
Merger Agreement, pursuant to which the Purchaser is acquiring the Company.

        WHEREAS, the parties hereto desire to amend the Merger Agreement as
provided herein.

        WHEREAS, all capitalized terms used herein shall have the meanings set
forth in the Merger Agreement unless otherwise specified herein.

        NOW, THEREFORE, the parties hereto hereby agree as follows:

        1.      Acceleration of Stock Options. The third sentence of Section
7.8(a) of the Merger Agreement shall be amended to read as follows:

                "The Company shall have the right to amend the terms of any
Company Stock Option which is an incentive stock option satisfying the
requirements of Section 422 of the Code (an "Incentive Stock Option")
outstanding on the date hereof so that it would be vested on the scheduled date
of termination of the Offer and the Company shall have the right to amend the
terms of any Company Stock Option which is not an Incentive Stock Option
outstanding on the date hereof so that it would become vested immediately prior
to the Effective Time."

        2.      Miscellaneous. Except to the extent expressly modified by this
Amendment, the Merger Agreement shall continue in full force and effect in
accordance with its terms. For the convenience of the parties hereto, this
Amendment may be executed in any number of counterparts, each such counterpart
being deemed to be an original instrument, and all such counterparts shall
together, along with the Merger Agreement, constitute the same agreement.
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        IN WITNESS WHEREOF, this Amendment has been duly executed and delivered
by the duly authorized officers of the parties hereto on the date first
hereinabove written.

                                        MILLIPORE CORPORATION



                                        By:   /s/ GEOFFREY NUNES
                                           ----------------------------------
                                           Name: Geoffrey Nunes
                                           Title: Senior Vice President



                                        MCTG ACQUISITION CORP.




                                        By:   /s/ GEOFFREY NUNES
                                           ----------------------------------
                                           Name: Geoffrey Nunes
                                           Title: Senior Vice President




                                        TYLAN GENERAL, INC.




                                        By:   /s/ DAVID L. STONE
                                           ----------------------------------
                                           Name: David L. Stone
                                           Title: Executive Vice President
                                                  and Chief Financial Officer


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