ADVANCED OXYGEN TECHNOLOGIES INC
SC 13D, 1998-01-16
PATENT OWNERS & LESSORS
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549



                                  SCHEDULE 13D
                                 (Rule 13d-101)

       INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO 13d-1(a)
                AND AMENDMENTS THERETO FILED PURSUANT TO 13d-2(a)


                              (Amendment No. ___)1


                       Advanced Oxygen Technologies, Inc.
                       ----------------------------------
                                (Name of Issuer)


                     Common Stock, par value $.001 per share
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                   007548-10-3
- --------------------------------------------------------------------------------
                                 (CUSIP Number)


                                 Robert E. Wolfe
                        c/o Crossfield, Inc., Suite 1000
                                230 Park Avenue
                               New York, NY 10169
                                 (212) 808-3061
- --------------------------------------------------------------------------------
          (Name, Address and Telephone Number of Person Authorized to
                      Receive Notices and Communications)

                                December 18, 1997
- --------------------------------------------------------------------------------
            (Date of Event which Requires Filing of this Statement)

     If the filing  person has  previously  filed a statement on Schedule 13G to
report the acquisition  which is the subject of this Schedule 13D, and is filing
this schedule because of Rule 13d-1(b)(3) or (4), check the following box [ ]

     Note. Six copies of this statement, including all exhibits, should be filed
with the  Commission.  See Rule 13d-1(a) for other parties to whom copies are to
be sent.

                         (Continued on following pages)

                               Page 1 of 14 Pages

                      The Exhibit Index appears on page ___


1    The  remainder  of this  cover  page  shall be filled  out for a  reporting
     person's  initial  filing on this form with respect to the subject class of
     securities,  and for any subsequent amendment containing  information which
     would alter disclosures provided in a prior cover page.


     The  information  required on the remainder of this cover page shall not be
deemed to be "filed"  for the purpose of Section 18 of the  Securities  Exchange
Act of 1934 ("Act") or otherwise  subject to the  liabilities of that section of
the Act but shall be subject to all other  provisions of the Act  (however,  see
the Notes).



<PAGE>

                               SCHEDULE 13D

CUSIP No.   007548-10-3                                       Page 2 of 14 Pages
- --------------------------------------------------------------------------------
1)  NAME OF REPORTING PERSON
    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
      Eastern Star, Ltd.
- --------------------------------------------------------------------------------
2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) [ ]
                                                                         (b) [ ]
- --------------------------------------------------------------------------------
3)  SEC USE ONLY
- --------------------------------------------------------------------------------
4)  SOURCE OF FUNDS*
      WC
- --------------------------------------------------------------------------------
5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
    REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)                                  [ ]
- --------------------------------------------------------------------------------
6)  CITIZENSHIP OR PLACE OF ORGANIZATION
      Bahamas
- --------------------------------------------------------------------------------
    NUMBER        7)   SOLE VOTING POWER
    OF                   5,937,500
    SHARES             ---------------------------------------------------------
    BENEFICIALLY  8)   SHARED VOTING POWER
    OWNED BY             -0-
    EACH               ---------------------------------------------------------
    REPORTING     9)   SOLE DISPOSITIVE POWER
    PERSON               5,937,500
    WITH               ---------------------------------------------------------
                 10)   SHARED DISPOSITIVE POWER
                         -0-
- --------------------------------------------------------------------------------
11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
      5,937,500
- --------------------------------------------------------------------------------
12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
                                                                            [ ]
- --------------------------------------------------------------------------------
13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
      20.0%
- --------------------------------------------------------------------------------
14) TYPE OF REPORTING PERSON*
      CO
- --------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>


                               SCHEDULE 13D

CUSIP No.   007548-10-3                                       Page 3 of 14 Pages
- --------------------------------------------------------------------------------
1)  NAME OF REPORTING PERSON
    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
    Crossland, Ltd. (Belize)
- --------------------------------------------------------------------------------
2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) [ ]
                                                                         (b) [ ]
- --------------------------------------------------------------------------------
3)  SEC USE ONLY
- --------------------------------------------------------------------------------
4)  SOURCE OF FUNDS*
      WC
- --------------------------------------------------------------------------------
5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
    REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)                                  [ ]
- --------------------------------------------------------------------------------
6)  CITIZENSHIP OR PLACE OF ORGANIZATION
      Delaware
- --------------------------------------------------------------------------------
    NUMBER        7)   SOLE VOTING POWER
    OF                   6,312,500
    SHARES             ---------------------------------------------------------
    BENEFICIALLY  8)   SHARED VOTING POWER
    OWNED BY             -0-
    EACH               ---------------------------------------------------------
    REPORTING     9)   SOLE DISPOSITIVE POWER
    PERSON               6,312,500
    WITH               ---------------------------------------------------------
                 10)   SHARED DISPOSITIVE POWER
                         -0-
- --------------------------------------------------------------------------------
11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
      6,312,500
- --------------------------------------------------------------------------------
12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
                                                                            [ ]
- --------------------------------------------------------------------------------
13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
      21.3%
- --------------------------------------------------------------------------------
14) TYPE OF REPORTING PERSON*
      CO
- --------------------------------------------------------------------------------


                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>

                               SCHEDULE 13D

CUSIP No.   007548-10-3                                       Page 4 of 14 Pages
- --------------------------------------------------------------------------------
1)  NAME OF REPORTING PERSON
    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
    Robert E. Wolfe
- --------------------------------------------------------------------------------
2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) [ ]
                                                                         (b) [ ]
- --------------------------------------------------------------------------------
3)  SEC USE ONLY

- --------------------------------------------------------------------------------
4)  SOURCE OF FUNDS*
      PF
- --------------------------------------------------------------------------------
5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
    REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)                                  [ ]
- --------------------------------------------------------------------------------
6)  CITIZENSHIP OR PLACE OF ORGANIZATION
      USA
- --------------------------------------------------------------------------------
    NUMBER        7)   SOLE VOTING POWER
    OF                   50,000
    SHARES             ---------------------------------------------------------
    BENEFICIALLY  8)   SHARED VOTING POWER
    OWNED BY             -0-
    EACH               ---------------------------------------------------------
    REPORTING     9)   SOLE DISPOSITIVE POWER
    PERSON               50,000
    WITH               ---------------------------------------------------------
                 10)   SHARED DISPOSITIVE POWER
                         -0-
- --------------------------------------------------------------------------------
11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
      50,000
- --------------------------------------------------------------------------------
12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
    CERTAIN SHARES                                                           [ ]
- --------------------------------------------------------------------------------
13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
      0.2%
- --------------------------------------------------------------------------------
14) TYPE OF REPORTING PERSON*
      IN
- --------------------------------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>

                               SCHEDULE 13D

CUSIP No.   0007548-10-3                                      Page 5 of 14 Pages
- --------------------------------------------------------------------------------
1)  NAME OF REPORTING PERSON
    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
    Triton International, Ltd.
- --------------------------------------------------------------------------------
2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) [ ]
                                                                         (b) [ ]
- --------------------------------------------------------------------------------
3)  SEC USE ONLY

- --------------------------------------------------------------------------------
4)  SOURCE OF FUNDS*
      WC
- --------------------------------------------------------------------------------
5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
    REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)                                  [ ]
- --------------------------------------------------------------------------------
6)  CITIZENSHIP OR PLACE OF ORGANIZATION
      Bahamas
- --------------------------------------------------------------------------------
    NUMBER        7)   SOLE VOTING POWER
    OF                   375,000
    SHARES             ---------------------------------------------------------
    BENEFICIALLY  8)   SHARED VOTING POWER
    OWNED BY             -0-
    EACH               ---------------------------------------------------------
    REPORTING     9)   SOLE DISPOSITIVE POWER
    PERSON               375,000
    WITH               ---------------------------------------------------------
                 10)   SHARED DISPOSITIVE POWER
                         -0-
- --------------------------------------------------------------------------------
11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
      375,000
- --------------------------------------------------------------------------------
12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
                                                                             [ ]
- --------------------------------------------------------------------------------
13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
      1.3%
- --------------------------------------------------------------------------------
14) TYPE OF REPORTING PERSON*
      CO
- --------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>


                               SCHEDULE 13D

CUSIP No.   0007548-10-3                                      Page 6 of 14 Pages
- --------------------------------------------------------------------------------
1)  NAME OF REPORTING PERSON
    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
    Coastal Oil, Ltd.
- --------------------------------------------------------------------------------
2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) [ ]
                                                                         (b) [ ]
- --------------------------------------------------------------------------------
3)  SEC USE ONLY

- --------------------------------------------------------------------------------
4)  SOURCE OF FUNDS*
      WC
- --------------------------------------------------------------------------------
5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
    REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)                                  [ ]
- --------------------------------------------------------------------------------
6)  CITIZENSHIP OR PLACE OF ORGANIZATION
      Belize
- --------------------------------------------------------------------------------
    NUMBER        7)   SOLE VOTING POWER
    OF                   5,937,500
    SHARES             ---------------------------------------------------------
    BENEFICIALLY  8)   SHARED VOTING POWER
    OWNED BY             -0-
    EACH               ---------------------------------------------------------
    REPORTING     9)   SOLE DISPOSITIVE POWER
    PERSON               5,937,500
    WITH               ---------------------------------------------------------
                 10)   SHARED DISPOSITIVE POWER
                         -0-
- --------------------------------------------------------------------------------
11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
      5,937,500
- --------------------------------------------------------------------------------
12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
                                                                             [ ]
- --------------------------------------------------------------------------------
13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
      20.0%
- --------------------------------------------------------------------------------
14) TYPE OF REPORTING PERSON*
      CO
- --------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>

                               SCHEDULE 13D


CUSIP No.   0007548-10-3                                      Page 7 of 14 Pages
- --------------------------------------------------------------------------------
1)  NAME OF REPORTING PERSON
    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
    Crossland, Ltd.
- --------------------------------------------------------------------------------
2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) [ ]
                                                                         (b) [ ]
- --------------------------------------------------------------------------------
3)  SEC USE ONLY

- --------------------------------------------------------------------------------
4)  SOURCE OF FUNDS*
      WC
- --------------------------------------------------------------------------------
5)  CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
    REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)                                  [ ]
- --------------------------------------------------------------------------------
6)  CITIZENSHIP OR PLACE OF ORGANIZATION
      Bahamas
- --------------------------------------------------------------------------------
    NUMBER        7)   SOLE VOTING POWER
    OF                   5,937,500
    SHARES             ---------------------------------------------------------
    BENEFICIALLY  8)   SHARED VOTING POWER
    OWNED BY             -0-
    EACH               ---------------------------------------------------------
    REPORTING     9)   SOLE DISPOSITIVE POWER
    PERSON               5,937,500
    WITH               ---------------------------------------------------------
                 10)   SHARED DISPOSITIVE POWER
                         -0-
- --------------------------------------------------------------------------------
11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
      5,937,500
- --------------------------------------------------------------------------------
12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
                                                                             [ ]
- --------------------------------------------------------------------------------
13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
      20.03%
- --------------------------------------------------------------------------------
14) TYPE OF REPORTING PERSON*
      CO
- --------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


<PAGE>
ITEM 1.  SECURITY AND ISSUER

     This statement on Schedule 13D  ("Statement")  relates to the common stock,
par value $0.01, of Advanced Oxygen Technologies,  Inc. ("AOXY").  The principal
executive offices are located at the following  address:  c/o Crossfield,  Inc.,
230 Park Avenue, Suite 1000, New York, NY 10169.

ITEM 2.  IDENTITY AND BACKGROUND

     This Statement is filed jointly by (a) Crossland,  Ltd.  (Belize)  ("CLB"),
(b) Coastal Oil,  Ltd.  ("Coastal"),  (c)  Crossland,  Ltd.  ("Crossland"),  (d)
Eastern Star, Ltd. ("Eastern"),  (e) Triton International,  Ltd. ("Triton"), and
(f) Robert E. Wolfe ("Wolfe") (collectively the "Reporting Persons").

     CLB is a Belize  corporation,  and has its principal  place of business and
corporate office located at 60 Market Square, P.O. Box 364, Belize City, Belize,
Central America.  The principal business of CLB invests in corporate  securities
and real estate development projects.  The President and Secretary of CLB is Mr.
Anthony  J.  R.  Howorth.  Mr.  Howorth  is a  Bahamian  citizen  whose  primary
occupation is President of  Euro-Caribbean  Ltd., and whose business  address is
104b Saffrey Square, Nassau, Bahamas.

     Coastal is a Belize  corporation,  and has its principal  place of business
and corporate  office located at 40 Santa Rita Road,  Corazel,  Belize,  Central
America.  The principal business of Coastal is investment in petroleum projects,
agricultural commodities,  and corporate securities. The President of Coastal is
Dr.  Margaret  Noguera,  who is a Belize  citizen whose primary  occupation is a
medical  doctor,  and whose  business  address is 40 Santa  Rita Road,  Corazel,
Belize, Central America.

     Crossland is a Bahamas corporation, and has its principal place of business
and corporate  office located at 104B Saffrey Square,  Bank Lane and Bay Street,
Box N-1612,  Nassau,  Bahamas. The principal business of Crossland is investment
in corporate securities and project financing.  The President and Vice President
of Crossland is L. H.  Osterlolt.  Mr.  Osterlolt  is a Bahamian  citizen  whose
primary  occupation is director of Bahamas  Company  Services,  Ltd.,  and whose
business address is 104B Saffrey Square, Nassau Bahamas.

     Eastern is a Bahamas  corporation,  and has its principal place of business
and corporate  office located at 104B Saffrey Square,  Bank Lane and Bay Street,
Box N-1612, Nassau,  Bahamas. The principal business of Eastern is investment in
corporate  securities and real estate  development  projects.  The President and
Vice President of Eastern is Robert A. Montgomery.  Mr. Montgomery is a Bahamian
citizen whose primary  occupation is corporate  consulting,  and whose  business
address is 104B Saffrey Square, Nassau Bahamas.

     Triton is a Bahamas  corporation,  and has its principal  place of business
and corporate office located at Euro-Canadian  House,  Marlboro Street,  Nassau,
Bahamas.  The principal business of Triton is investment in corporate securities
and project  financing  . The  executive  officers of Triton are Sidney  Morris,
President,  and Jens S. Olsen is a Director.  Mr. Morris is a 


                                       -8-
<PAGE>

Bahamian  citizen  whose primary  address is  Eurocanadian  House,  Marlboro St,
Nassau Bahamas. Mr. Morris is a consultant.  Mr. Olsen is a Danish citizen whose
primary  occupation  is  corporate  consulting,  and whose  business  address is
Lunderskovvej 15, 6640, Lunderskov, Denmark

     Wolfe is a U.S.  citizen,  whose business address is c/o Crossfield,  Inc.,
230 Park Avenue, Suite 1000, New York, NY 10169, and whose primary occupation is
President of Crossfield,  Inc., company providing strategic business consulting.
He is also the President of AOXY since the commons stock  acquisitions  reported
in this Statement.

     During the past five years,  none of the  persons  named in this Item 2 has
been  convicted  in a criminal  proceeding  or subject to a judgment,  decree or
final  order  enjoining  future  violations  of,  or  prohibiting  or  mandating
activities  subject  to  federal  or  state  securities  laws,  or  finding  any
violations with respect to such laws.

ITEM 3.  SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.

     Common stock of AOXY was  purchased  on December 18, 1997 by the  following
persons pursuant to the Stock Acquisition Agreement (Exhibit A) and the Purchase
Agreement (Exhibit B) as follows:

                    # of Shares        Price Paid            How Paid

  Wolfe                  50,000             $645              cash
  Triton                375,000           $4,687.50           cash
  CLB                 1,500,000          $15,000              cash
                        375,000           $4,687.50           cash
                      4,437,500          $44,375              services
  Crossland           1,500,000          $15,000              cash
                      4,437,500          $44,375              services
  Coastal             1,500,000          $15,000              cash
                      4,437,500          $44,375              services
  Eastern             1,500,000          $15,000              cash
                      4,437,500          $44,375              services
                      ---------          -------
        Total        24,550,000         $247,500


     No  part of the  purchase  price  was  represented  by  funds  borrowed  or
otherwise obtained for the purpose of acquiring, holding, trading or voting such
securities.  Services rendered consisted of introductions to a certain number of
potential acquisition candidates.

ITEM 4.  PURPOSE OF TRANSACTION.

     There are no  specific  plans at the  present  time that relate to or would
result in any of the  actions  enumerated  in Item 4 of Schedule  13D,  although
there  have  been  and  continue  to be  discussions  with  several  acquisition
candidates,  sellers  of assets  and merger  targets.  In the  normal  course of
business,  there may be in the future an acquisition,  merger,  purchase or sale
that would change the above conditions.  The Reporting Persons reserve the right
to buy or sell  securities  of AOXY from time to time in open  market or private
transactions.



                                      -9-
<PAGE>

ITEM 5.  INTEREST IN SECURITIES OF THE ISSUER.

     (a)  and  (b)  The  following  is  the  amount  of  common  stock  of  AOXY
beneficially owned by the Reporting Persons:

                                          # of Shares         % of Common Stock

Robert E. Wolfe                                50,000                0.17 %
Triton-International, Ltd.                    375,000                1.26%
Crossland, Ltd. (Belize)                    6,312,500               21.30%
Crossland, Ltd.                             5,937,500               20.03%
Coastal Oil, Ltd.                           5,937,500               20.03%
Eastern Star, Ltd.                          5,937,500               20.03%
                                            ---------               ------
      Total                                24,550,000               82.83%


     (b) Each of the  persons  above  has sole  power to vote and sole  power to
dispose of the shares of AOXY listed opposite their name. The following  persons
may be deemed to be indirect  beneficial owners of the stock indicated by virtue
of the relationships described.

                  Margaret Noguera

                  Jens S. Olsen

                  Anthony JR Howorth

                  Sidney Morris

                  Robert Montgomery

                  LH Osterlolt



     Each of the Reporting  Persons hereby  disclaims that it has any beneficial
ownership in the stock owned, directly or indirectly by any other entity.

     (c)  Except  as set  forth  above,  there  has been no  transaction  by the
Reporting Persons in the common stock of Advanced Oxygen Technologies, Inc.

     (d) Except as set forth  above,  no other person is known to have the right
to receive or the power to direct the receipt of dividends from, or the proceeds
from the sale of, the common stock of AOXY set forth in Item 5(a).

     (e) Not Applicable.

ITEM 6.  CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT 
         TO SECURITIES OF THE ISSUER.




                                      -10-
<PAGE>

     Except  to the  extent  described  in  Items 2 and 5,  none of the  persons
identified  in  Items  2  and  5  is  a  party  to  any  contract,  arrangement,
understanding or relationship with respect to any securities of AOXY.

ITEM 7.  MATERIAL TO BE FILED AS EXHIBITS.

EXHIBIT A:   The Stock Acquisition Agreement dated as of December as of 18, 1997

EXHIBIT B:   Purchase Agreement dated as of December 18, 1997





                                      -11-
<PAGE>


                                   SIGNATURES

     After  reasonable  inquiry  and to the  best  of his or her  knowledge  and
belief, each of the undersigned certifies that the information set forth in this
Statement is true, complete and correct.



Dated: January 16, 1998

CROSSLAND, LTD. (Belize)


By: /s/ L.H. Osterlolt
Title: Vice President




Dated: January 16, 1998

CROSSLAND, LTD.


By: /s/ Anthony J.R. Howorth
Title: President




Dated: January 16, 1998

EASTERN STAR, LTD.


By: /s/ Roberta Montgomery
Title: Vice President




Dated: January 16, 1998

COASTAL OIL, LTD.


By: /s/ Dr. M. Noguera
Title: President



                                      -12-
<PAGE>

Dated: January 16, 1998

TRITON INTERNATIONAL, LTD.


By: /s/ Jens S. Olsen
Title: Director




Dated: January 16, 1998

   /s/ Robert E. Wolfe




                                      -13-

<PAGE>



                                  EXHIBIT INDEX





EXHIBIT A:   The Stock Acquisition Agreement dated as of December as of 18, 1997

EXHIBIT B:   Purchase Agreement dated as of December 18, 1997















                                      -14-

<PAGE>
                                                              Exhibit A
                                                                 Execution (iii)


                           STOCK ACQUISITION AGREEMENT
                           ---------------------------


         THIS  AGREEMENT  made  as of the 18 day  of  December,  1997,  (herein,
together with the Schedules attached hereto,  referred to as "Agreement") by and
among  ADVANCED  OXYGEN  TECHNOLOGIES,  INC.,  a Delaware  corporation,  (herein
referred to as "AOXY") and Crossland,  Ltd.  (Belize),  a registered  company of
Belize,  Eastern  Star,  Ltd.,  a  Bahamas  corporation,  Costal  Oil,  Ltd.,  a
registered  company of Belize,  and Crossland Ltd., a Bahamas  corporation (each
herein referred to as a "Purchaser" and, collectively, the "Purchasers").

         In reliance upon the  representations and warranties made herein and in
consideration of the mutual agreements herein contained the parties hereby agree
as follows:

    SECTION 1. SALE AND PURCHASE OF STOCK.

         1.01 Sale of Stock to Purchasers.  (a) AOXY shall at the closing of the
transactions  hereinafter  provided  sell,  transfer,   assign  and  deliver  to
Purchasers an aggregate of 6,000,000  shares (the "Sale  Shares") of the capital
stock of AOXY in the amounts set forth on Schedule 1.01 hereto.

              (b) AOXY  shall at the  closing  of the  transactions  hereinafter
provided  sell,  transfer,  assign and deliver to  Purchasers  an  aggregate  of
17,750,000 shares (the "Consulting  Shares") of the capital stock of AOXY in the
amounts set forth on Schedule  1.01 hereto.  The Sale Shares and the  Consulting
Shares are hereinafter referred to collectively as the "Shares."

         1.02  Consideration  for Stock. (a) In consideration of the sale of the
Sale Shares,  Purchasers shall pay to AOXY the aggregate amount of US $60,000.00
(the  "Purchase  Price") by delivery to Kieffer and Hahn, as attorneys for AOXY,
the Purchase Price in the form of an official bank check or a certified check of
the Purchasers  payable to "Kieffer and Hahn,  IOLA account which funds shall be
used to pay certain creditors of AOXY.

              (b)  In  consideration  of the  sale  of  the  Consulting  Shares,
Purchasers have previously  provided  services to AOXY by identifying  potential
acquisition candidates.

         1.03  Transactions on the Closing Date. (a) Delivery of Shares.  At the
Closing,  AOXY  will  deliver  to  Purchasers  irrevocable  instructions  to the
transfer agent of AOXY for the issuance of stock  certificates  representing the
Shares; and

              (b) Delivery of  Consideration.  At the Closing,  Purchasers  will
deliver to AOXY an official bank check or a certified check of the Purchasers in
the amount of the Purchase Price payable to "Kieffer and Hahn, IOLA account."

<PAGE>


         (c) Resignations.  Resignations of all of the directors and officers of
AOXY other than those  designated in writing by Purchasers  prior to the Closing
Date to remain on the board or in office; and

         (d) Documents. Each of the documents contemplated by this Agreement.

    SECTION 2.  CLOSING.  The Closing  will take place at the offices of Kieffer
and Hahn, 111 Broadway,  New York, New York 10006,  at 10:00 A.M. on the date of
execution and delivery hereof by all of the parties.

    SECTION 3.  REPRESENTATIONS  AND  WARRANTIES OF AOXY.  AOXY  represents  and
warrants the following to the Purchasers:

         (a)  Organization  and  Standing.   (1)  AOXY  is  a  corporation  duly
organized, validly existing, and in good standing under the laws of the State of
Delaware, the State of its incorporation,  and is authorized to conduct business
in and is in good  standing in each  jurisdiction  in which the character of the
properties owned by it or the nature of the business transacted by it makes such
license or qualification necessary.

         (2)  The  certified  copies  heretofore   delivered  to  AOXY,  of  the
certificate of  incorporation,  of all licenses to transact  business and of the
by-laws of AOXY with all  amendments  to the date hereof are true,  complete and
correct.

         (3) AOXY has no subsidiaries.

         (b) Capital Stock. (1) The capital stock of AOXY consists of (A) thirty
million  (30,000,000)  shares of common stock, par value one cent (US $0.01) per
share  of which  five  million  six  hundred  ninety-six  thousand  two  hundred
fifty-two (5,696,252) shares have been validly issued and are fully paid and are
non-assessable  and are fully  transferable,  three  hundred fifty four thousand
(354,000)  shares  which shall be issued upon  conversion  of 177,000  shares of
preferred  stock  (172,000  shares of preferred  stock shall be  converted  into
344,000  shares on the date of  Closing)  and one  hundred  forty five  thousand
(145,000)  shares of which shall be issued upon  exercise of options and (B) ten
million  (10,000,000) shares of preferred stock par value one cent (US $.Ol) per
share of which  177,000  (172,000  shares of preferred  stock shall be converted
into 344,000 shares on the date of Closing)  shares have been validly issued and
are fully paid and are non- assessable and are fully transferable.

              (2) None of the  issued and  outstanding  shares is subject to any
voting trust agreement or other agreement relating to the voting thereof.

              (3) None of the authorized but unissued shares of AOXY are subject
to any warrants, obligations,  subscriptions, options, convertible securities or
other commitments under


                                       2
<PAGE>


which they are or may be required to be issued.

              (4) No transfer  tax will be payable  with respect to the issuance
of AOXY's stock contemplated hereby.

         (c) Stock  Issuance.  The Shares when issued shall be free and clear of
any encumbrances,  liens or restrictions on sale, other than those applicable to
restricted securities as defined under the rules and regulations  promulgated by
the Securities and Exchange Commission.

         (d)  Validity of  Agreement  Authority.  This  Agreement  has been duly
executed and  delivered by AOXY and  (assuming  valid  execution and delivery by
each  Purchaser) is a valid and binding  obligation,  enforceable  in accordance
with its terms.

         (e)  Authority to take Action.  (1) The  execution and delivery of this
Agreement  and  delivery  of the  subject  shares  and the  carrying  out of the
provisions hereof will not contravene any provisions of law, any order, judgment
and/or decree of any court or other governmental agency or AOXY's certificate of
incorporation, by-laws, or any indenture, agreement or other instrument to which
a AOXY is a party or by which AOXY may be bound,  or by which any property owned
by AOXY may be bound.

              (2) All legal actions required to be taken in connection with this
Agreement pursuant to the laws of any State or other governmental authority have
been so taken.

         (f) Accounts Receivable. AOXY has no accounts receivable.

         (g)  Liabilities of AOXY. AOXY has no liabilities or obligations of any
nature, whether accrued, absolute,  contingent or otherwise,  including, without
limitation,  tax liabilities due or to become due, except for (1)  approximately
$45,000 of accounts payable,  (2) the fees and expenses of counsel in connection
herewith  and (3)  amounts  due and  payable  to  certain  of its  directors  as
evidenced by  Promissory  Notes issued to such persons and the accrued  interest
earned  thereon which do not exceed  $350,000 in the  aggregate  which are to be
spun-off to the liquidating trust as set forth in section .

         (h) No Dividends or  Distributions.  Since June 30, 1995,  AOXY has not
declared,   set  aside  or  paid  to  its  stockholder  any  dividend  or  other
distribution  in  respect of its  capital  stock or  redeemed  or  purchased  or
otherwise acquired any of its capital stock or agreed to take any such action.

         (i) Absence of Material Changes or Events.  Except for matters publicly
disclosed  on (1) AOXY's  Proxy  Statement  in  connection  with the sale of its
oxygen control  technology to W.R. Grace  ("Grace") in February 1995; (2) AOXY's
Reports on Form 10-KSB with respect to AOXY's  fiscal years ended June 30, 1993,
1994  and 1995 and (3)  AOXY's  Reports  on form  10-Q for the  quarters  ending
September  30, 1995 and  December  31, 1995 and AOXY's  8-K's filed prior 


                                       3
<PAGE>

hereto copies of which have been heretofore delivered to Purchasers,  since June
30, 1995 there has been no event or condition of any  character,  materially and
adversely affecting AOXY's financial position,  assets,  liabilities (contingent
or otherwise),  results of operation,  business or business prospects,  and AOXY
has not:

              (1)  Incurred any  obligation  or  liability  (absolute,  accrued,
contingent, or otherwise) except in the ordinary course of business or except in
connection with the performance of this Agreement;

              (2)  Mortgaged,  pledged  or  subjected  to lien,  charge or other
encumbrance, any of its assets, tangible or intangible;

              (3) Sold or transferred any of its assets or canceled any debts or
claims, or waived any right of substantial value;

              (4) Made or committed to make any single  capital  expenditure  in
excess of five hundred dollars ($500.00),  or capital  expenditures in excess of
one thousand dollars ($ 1,000.00) in the aggregate or purchased or contracted to
purchase any land;

              (5) Sustained any damage,  destruction  or loss of its property in
excess of five hundred dollars ($500.00) whether or not covered by insurance;

              (6) Increased  the  compensation  payable or to become  payable by
AOXY to any of its  officers,  employees  or  agents,  or any bonus  payment  or
arrangement made to or with any of them;

              (7) Agreed to modify in any material respect any contract or other
instrument  to which AOXY is a party  except for the patent  purchase  agreement
with Grace;

              (8)  Increased or changed the medical  insurance  provided for the
benefit of its employees and their families.

              (9)  Increased  or  changed  the  amount of  disability  insurance
provided for the benefit of its employees;

              (10)  Entered  into any  transaction  other  than in the  ordinary
course of business; or

              (11) Made any material  change in any method of  accounting or any
accounting practice.

         (j) Title of Property. AOXY has no material assets.



                                        4
<PAGE>

         (k)  Building-Equipment  and  Motor  Vehicles.  AOXY is the owner of no
buildings, equipment or motor vehicles.

         (1) Tax Status. ( 1 ) AOXY has heretofore  furnished to Purchasers true
and complete copies of all federal,  state, local and foreign income tax returns
of AOXY filed for the three (3) years ended June 30,  1995.  Said tax returns of
AOXY have not been audited by the applicable taxing  authorities.  No agreements
made by AOXY for an extension of time for the  assessment  of any tax are now in
effect. All taxes,  including interest and penalties thereon,  shown on said tax
returns to be due and payable by AOXY,  or required to be withheld by AOXY on or
before the date hereof, have been paid or fully reserved for and withheld and no
formal  written claim for any tax,  assessment or levy for which AOXY may become
liable exists which has not been settled.

              (2) All other taxes,  due and payable at the Closing  Date, of any
kind whatsoever,  including, but not limited to, estimated income tax, franchise
tax, excise tax, doing business tax, payroll tax, personal property tax, use tax
and sales tax have been paid or fully reserved for and withheld.

         (m) Status of Contracts.  Except as reflected on Schedule 3(m). AOXY is
not a party  to any  written  or oral (i)  contract  for the  employment  of any
officer  or  individual  employee,  or  any  pension,   profit  sharing,  bonus,
retirement,  stock option or similar incentive or deferred  compensation plan or
arrangement in effect with its officers,  employees or others;  (ii)  continuing
contract for the  acquisition  of real estate or fixed assets;  (iii)  financing
arrangement involving the mortgaging,  pledging or other hypothecation of assets
or  involving  borrowing  which may not be repaid in part or in full on not more
than thirty (30) days' notice with  reference to unearned or amortized  discount
and  without  premium  or  penalty;  (iv)  contract  with any labor  union;  (v)
continuing  contract for the future  purchase of  materials  or  supplies;  (vi)
contract with any agent,  representative  or  distributor;  (vii) any instrument
evidencing or related to  indebtedness  for borrowed money, or pursuant to which
AOXY  is  obligated  to  borrow  money;  (viii)  any  contract,  arrangement  or
understanding under which AOXY has assumed,  guaranteed,  endorsed, or otherwise
become liable in connection with the obligation of any individual,  partnership,
corporation  or other  entity;  (ix) any  contract  not  included  in any of the
foregoing  which  involves  payment  by AOXY of more than five  hundred  dollars
($500.00).  True and  complete  copies of all items listed in Schedule 3( , have
been delivered to AOXY. The parties to such  instruments  have complied with all
the provisions thereof, and they are not in default under any of them.

         (n) Status of Leases.  AOXY is not a party to any leases except for the
month to month lease of document  storage  space at Pacific Mini  Storage,  1913
Sherman Street, Alameda, California.

         (o) Directors and Officers  Compensation:  Banks.  Schedule 3l0) hereto
contains a true an  complete  list  showing (i) the names of all  directors  and
officers of AOXY; (ii) the names of all persons whose compensation from AOXY for
the period beginning July 1, 1995 and ending March 31, 1996 will equal or exceed
ten thousand dollars ($ 10,000.00)  together with a statement of 


                                       5
<PAGE>

the full amount paid or payable to each such person for services  rendered or to
be rendered in such period and the basis  therefor;  (iii) the name of each bank
in which AOXY has an account,  or safe deposit box, and the names of all persons
authorized to draw  thereon,  or to have access  thereto;  (iv) the names of all
persons  holding  powers of attorney from AOXY,  and a summary  statement of the
terms thereof;  and (v) all credit cards and similar  accounts on which AOXY may
be liable.

         (p) Status of Insurance. AOXY has no insurance.

         (q)  Permits  and  Licenses.  AOXY is not  required  to  have  permits,
licenses,  approvals, and authorization of all federal, state, local and foreign
authorities and is presently not conducting any business.

         (r) Litigation.  There is no action, suit,  proceeding or investigation
pending,  or to the  knowledge of AOXY  threatened,  against or  affecting  AOXY
before any court,  arbitrator or administrative or governmental body and AOXY is
not  presently  subject to or in default in respect of any order,  injunction or
decree of any court or government instrumentality.

         (s) Compliance with Laws. Except as reflected on Schedule 3(s), AOXY is
not in  violation of any law,  regulation  or ordinance  which  violation  would
materially and adversely affect it or its operations.

         (t) Books of Accounts and Other Records.  The books of account, and the
minute books,  stock  certificate  books and ledgers of AOXY at the Closing Date
will,  in all  material  respects,  be correct  and  complete  and such books of
account and ledgers will fairly  present the  operations  of AOXY in  accordance
with generally accepted accounting principles.

         (u) Employee Benefit Plans.  AOXY is not party to any bonus,  incentive
compensation, profit-sharing, pension, retirement, stock purchase, stock option,
deferred  compensation,   hospitalization,   group  insurance,   death  benefit,
disability,   collective  bargaining  and  other  fringe  benefit  plans,  trust
agreements, arrangements or commitments.

         (v) No Directed Selling Efforts in Regard to this Transaction.  Neither
AOXY nor any  distributor,  if any,  participating in the offering of the Shares
nor any  person  acting  for  AOXY or any such  distributor  has  conducted  any
"directed  selling  efforts" as that term is defined in  Regulation  S under the
Securities  Act of  1933  ("Regulation  S").  Such  activity  includes,  without
limitation,  the mailing of printed material to investors residing in the United
States, the holding of promotional  seminars in the United States, the placement
of advertisements with radio or television  stations  broadcasting in the United
States or in publications with a general circulation in the United States, which
discuss the offering of the Shares.

         (w) No  Market  Manipulation.  AOXY has not  taken,  and will not take,
directly or  indirectly,  any action  designed to, or that might  reasonably  be
expected to, cause or result in  stabilization  or  manipulation of the price of
the its stock to facilitate the sale or resale of the Shares 


                                       6
<PAGE>

or affect the price at which the Shares are purchasable.

         (x) Reporting  Company.  AOXY is a  publicly-held  company whose common
stock is (and has been for the  past 90 days)  registered  pursuant  to  Section
12(g) of the Securities  Exchange Act of 1934 (the "1934 Act").  Pursuant to the
provisions  of the 1934  Act,  AOXY has filed all  reports  and other  materials
required to be filed  thereunder  with the  Securities  and Exchange  Commission
during the preceding twelve months,  except as otherwise disclosed herein and in
the Schedules annexed hereto and made a part hereof.

         (y) Offer to Buy.  No offer to buy the  Shares  was made to AOXY by any
person in the United States.

         (z) Pre Arranged  Transaction.  The  transactions  contemplated by this
Agreement:

              (1) have  not been  pre-arranged  with a  purchaser  who is in the
United States or is a US Person; and

              (2) are not part of a plan or  scheme  to evade  the  registration
provisions of the Securities Act of 1933 (the "1933 Act").

         (aa) Stop Transfer.  AOXY has not issued, and provided nothing comes to
AOXY's  attention  after the closing  date that will cause it to believe in good
faith  that the  issuance  of the Shares  was in  contravention  with any United
States law, will not issue,  any stop transfer order or other order impeding the
sale and  delivery of the Shares,  or any  underlying  shares  except for a stop
order  restricting  the sale of the Shares into the United  States or to, or for
the  account  or  benefit  of, US  Persons  during  the  Restricted  Period,  as
hereinafter defined.

    SECTION 4. "REPRESENTATIONS AND WARRANTIES OF PURCHASERS. Each Purchaser, as
and for itself,  severally and not jointly,  represents and warrants to AOXY the
following:

         (a) Organizing and Standing.  (I) Each Purchaser is a corporation  duly
organized, validly existing, and in good standing under the laws of the place of
its incorporation.

              (2) The copy  heretofore  delivered to AOXY, of the certificate of
incorporation  with all  amendments  to the date hereof are true,  complete  and
correct.

              (3) Each Purchaser has no subsidiaries, except for those listed on
Schedule 4(a) hereto each of which is duly organized,  validly existing,  and in
good standing under the laws of the place of its incorporation or organization.

         (b)  Validity of  Agreement  Authority.  This  Agreement  has been duly
executed and  delivered by the  Purchasers  and  (assuming  valid  execution and
delivery  by  the  AOXY)  is a  valid  and  binding  obligation  enforceable  in
accordance with its terms.


                                        7
<PAGE>

         (c)  Authority to take Action.  (1) The  execution and delivery of this
Agreement  and  delivery  of the  subject  shares  and the  carrying  out of the
provisions hereof will not contravene any provisions of law, any order, judgment
and/or  decree of any  court or other  governmental  agency or each  Purchaser's
certificate of incorporation or charter, by-laws or any indenture,  agreement or
other instrument to which such Purchaser is a party or by which it may be bound,
or by which any property owned by it may be bound.

              (2) All  corporate  and  legal  actions  required  to be  taken in
connection  with  this  Agreement  pursuant  to the  laws of any  State or other
governmental authority have been so taken.

         (d)  Compliance  with Laws.  No Purchaser  has  received  notice of any
violation of any law,  regulation or ordinance which violation would  materially
and adversely affect it or its operations.

         (e) Consents.  No Purchaser requires consent,  approval,  registration,
qualification  or  filing  with  any  United  States  federal,  state  or  local
government authority or any foreign government authority in connection with such
Purchaser's  execution of this  Agreement or  consummation  of the  transactions
contemplated  hereby,  other than the required  filings  with the United  States
Securities and Exchange Commission.

         (f) Information on Company. The Purchasers have been furnished with and
have read AOXY's  registration  statement on Form S-1 declared  effective by the
Securities  and Exchange  Commission on July 7, 1993,  and all of its Forms 10-Q
and 8-K reports filed subsequent thereto, (collectively,  with exhibits thereto,
hereinafter  referred to as the  "Reports").  In addition,  the Purchasers  have
received from AOXY such other information  concerning its operations,  financial
condition and other matters as the Purchasers have requested, and considered all
factors  the  Purchasers  deem  material  in  deciding  on the  advisability  of
investing in the Shares (such information in writing is collectively, the "Other
Written Information").

         (g)  Information  on  Purchasers.  Each  Purchaser  is  experienced  in
investments and business matters,  has made investments of a speculative  nature
and with its  representatives,  has such  knowledge and experience in financial,
tax and other  business  matters as to enable  such  Purchaser  to  utilize  the
information  made  available  by AOXY to evaluate the merits and risks of and to
make an informed investment decision with respect to the proposed purchase. Each
Purchaser has the  authority  and is duly and legally  qualified to purchase and
own the Shares.

         (h) Site and Condition of Sale.  Each  Purchaser is not a US Person (as
that term is defined in Exhibit A attached hereto). Each Purchaser  acknowledges
that AOXY has not solicited  this offer to purchase the Shares within the United
States and that the sale of the Note and  conversion  into the  Shares  will not
take place within the United States (for this purpose, the "United States" means
the Unites States of America, its territories and possessions,  and any state of
the  United  States  and  the  District  of  Columbia).   Each   Purchaser  also
acknowledges  that the  Shares  have not been  registered  under the laws of any
other  country  or  jurisdiction  and  that  AOXY  takes no  responsibility  


                                       8
<PAGE>

for complying with any such laws.

         (i) Investment Intent. Each Purchaser is subscribing for the Shares for
its own account and benefit and not as a nominee or for the account of any other
person or  entity.  Each  Purchaser  has no  present  intention  of  selling  or
distributing the Shares or any part thereof except for a sale in accordance with
Regulation S, if available. Each Purchaser has sufficient financial resources to
hold the Shares for an indefinite period of time.

         (j) No Market  Manipulation  Short Sales. Each Purchaser has not taken,
and will not take, directly or indirectly, any action designed to, or that might
reasonably  be expected  to, cause or result in a  manipulation  of the price of
AOXY Shares (including  making, or causing to be made, any short sales of AOXY's
common stock) in order to facilitate the sale or resale of AOXY Shares or affect
the price at which such shares are purchasable upon conversion of the Note.

         (k) No Offer in United  States.  No offer to buy the Shares was made to
AOXY by any Purchaser in the United States.

         (1) No Pre-Arranged Transaction.  The transactions contemplated by this
Agreement with respect to the sale of the Shares to the Purchasers:

              (1) have  not been  pre-arranged  with a  purchaser  who is in the
United States or is a US Person; and

              (2) are not part of a plan or  scheme  to evade  the  registration
provisions of the Securities and Exchange Act of I933 (the "Act").

         (m) No Directed Selling Efforts in Regard to this Transaction.  To the
best  knowledge of each Purchaser with respect to the sale of the Shares to such
Purchaser,  neither  AOXY  nor any  distributor,  if any,  participating  in the
offering  of the Shares nor any person  acting for AOXY or any such  distributor
has  conducted  any  "directed  selling  efforts"  as that  term is  defined  in
Regulation S. Such activity includes, without limitation, the mailing of printed
material to investors  residing in the United States, the holding of promotional
seminars in the United  States,  the placement of  advertisements  with radio or
television stations  broadcasting in the United States or in publications with a
general  circulation  in the United  States,  which  discuss the offering of the
Shares.

         (n) To Other Representations. Except as set forth in this Agreement, no
representations or warranties,  oral or otherwise, have been made to Purchasers,
including  without  limitation,   any  representations   concerning  the  future
prospects of AOXY, by AOXY, by any agent of AOXY, any employees or affiliates of
AOXY or by any other person whether or not associated with this  transaction and
in  entering  into  this  transaction   Purchasers  are  not  relying  upon  any
information.


                                       9
<PAGE>

    SECTION 5.  REGULATION S OFFERING.  The sale of Shares  hereby is being made
pursuant to Rule  903(c)(2) of the  Regulation S, and is intended to comply with
the  provisions  of  Regulation  S.  The  Shares  have  not been and will not be
registered  under  the 1933 Act or under  the  securities  laws of any  state or
jurisdiction of the United States ("State Laws").

    SECTION 6.  Transfer of  Securities.  The Shares may not be  transferred  or
resold to any US Person  until the 41st day from the date a Purchaser  purchases
the Shares (the  "Restricted  Period") and then only in accordance with the 1933
Act and  applicable,  State  Laws.  Each  Purchaser  agrees  that  it is  solely
responsible  for  compliance  therewith  with  respect to any such  transfer  or
resale.

    SECTION 7.  CONDITIONS  PRECEDENT TO PURCHASERS'  OBLIGATION TO COMPLETE THE
TRANSACTION.  The obligation of each  Purchaser to consummate  the  transactions
described  in  Section 1 hereof is  subject  to the  fulfillment  of each of the
following conditions prior to or at the Closing:

         (a) Delivery of Shares.  Purchasers shall have received delivery of the
Shares as contemplated herein.

         (b) Spin-off AOXY shall have spun-off good and marketable  title to its
rights to  royalties  from W. R. Grace  (its only  material  asset) and  certain
liabilities  including  only amounts due to former  employees as a result of the
receipt of the royalties and notes payable to certain directors in the aggregate
principal amount of $275,000 plus the interest earned thereon.

         (c) Other Creditors.  AOXY shall have achieved  settlement in an amount
and on terms reasonably  satisfactory to Purchasers of all of the liabilities of
AOXY,  including,  without  limitation,  all accounts payable, if any, and other
accrued expenses, if any.

         (d)  Resignation  of  Directors  and  Officers.   Upon  appointment  of
directors  chosen by Purchasers  to fill the existing  vacancies on the board of
directors of AOXY, all directors and officers not so chosen by Purchasers  shall
have tendered to AOXY their resignations as directors and/or officers of AOXY.

         (e) Conversion of Preferred  Stock.  All of the issued and  outstanding
preferred stock of AOXY shall have been converted to common stock of AOXY except
for 5,000 shares.

         (f)Representations  and  Warranties of AOXY.  The  representations  and
warranties  made by AOXY  herein  shall  be true  and  correct  in all  material
respects.

         (g) No Actions or Proceeding.  No action or proceeding shall be pending
or threatened  on the Closing Date wherein an  unfavorable  judgment,  decree or
order would prevent or make unlawful the carrying out of this Agreement or would
cause the  transaction  contemplated  by this Agreement to be rescinded or would
require a Purchaser to divest itself of the shares to be acquired.



                                       10
<PAGE>

         It is  understood  that the  certificates  evidencing  the Shares  sold
pursuant hereto may bear legends in substantially the following form:


          THE SHARES REPRESENTED BY THIS CERTIFICATE HAVE BEEN OFFERED
          AND  SOLD IN AN  "OFFSHORE  TRANSACTION"  IN  RELIANCE  UPON
          REGULATION S AS  PROMULGATED  BY THE SECURITIES AND EXCHANGE
          COMMISSION.  ACCORDINGLY,  THE  SHARES  REPRESENTED  BY THIS
          CERTIFICATE  HAVE NOT BEEN  REGISTERED  UNDER THE SECURITIES
          ACT OF 1933,  AS AMENDED  (THE "ACT") AND MAY NOT BE OFFERED
          FOR SALE, SOLD OR OTHERWISE TRANSFERRED IN THE UNITED STATES
          OR TO A "US PERSON" (AS DEFINED  UNDER  REGULATION S) EXCEPT
          PURSUANT TO AN EFFECTIVE  REGISTRATION  STATEMENT  UNDER THE
          ACT, OR PURSUANT TO AN EXEMPTION FROM REGISTRATION UNDER THE
          ACT, THE  AVAILABILITY  OF WHICH IS TO BE ESTABLISHED TO THE
          SATISFACTION OF THE COMPANY.

    SECTION 8.  CONDITIONS  PRECEDENT  TO AOXY'S  OBLIGATIONS  TO  COMPLETE  THE
TRANSACTION.  The obligation of AOXY to consummate the transactions  described m
Section  1  hereof  is  subject  to the  fulfillment  of each  of the  following
conditions prior to or at the Closing:

         (a) Purchase  Price.  AOXY shall have  received  the Purchase  Price as
contemplated herein.

         (b) Spin-off AOXY shall have spun-off good and marketable  title to its
rights to  royalties  from W. R. Grace  (its only  material  asset) and  certain
liabilities  including  only amounts due to former  employees as a result of the
receipt of the royalties and notes payable to certain directors in the aggregate
principal amount of $275,000 plus the interest earned thereon.

         (c) Management Services  Agreement.  Within 30 days of the date hereof,
Purchasers,  or their  duly  appointed  agent,  shall  enter  into a  management
services  agreement for a period of one year on terms and conditions  acceptable
to AOXY.

         (d) presentations and Warranties of Purchasers. The representations and
warranties  made by the  Purchasers  herein  shall  be true and  correct  in all
material respects.

         (e) No actions or proceedings. No action or proceeding shall be pending
or threatened  on the Closing Date wherein an  unfavorable  judgment,  decree or
order would prevent or make unlawful the carrying out of this Agreement or would
cause the transaction contemplated by this Agreement to be rescinded.

         SECTION 9. SURVIVAL OF REPRESENTATIONS AND WARRANTIES. All


                                       11
<PAGE>

representations  and  warranties  contained  herein  or made in  writing  by the
parties in connection with the  transactions  contemplated  hereby shall survive
the execution and delivery of this Agreement and the closing of the transactions
contemplated by this Agreement,  regardless of any  investigation  made by or on
behalf of the parties or any payment for and acceptance of stock hereunder.  All
statements  contained  in any  certificate,  list,  letter  or other  instrument
delivered by or on behalf of the parties  pursuant  hereto or in connection with
the  transactions   contemplated  hereby  (including   statements,   letters  or
certificates  of  independent  parties such as public  accountants or attorneys)
shall constitute representations and warranties by the parties hereunder.

    SECTION 10.  Indemnification.  (a) Of AOXY. Each Purchaser agrees to defend,
indemnify  and  hold  harmless  AOXY,  its  current   officers,   directors  and
stockholders  against  and in  respect of (i) any and all  losses,  liabilities,
damages,   deficiencies,   costs  or  expenses  (including,  without  limitation
reasonable  attorneys fees and  disbursements)  resulting from (A) the breach of
any  covenant,  warranty or  agreement  hereunder  by such  Purchaser or (B) any
representations made by such Purchaser in this Agreement, not being complete and
correct or being false and misleading or containing any material misstatement of
fact or omitting any material fact required to be stated to make the  statements
therein not misleading; and (ii) any and all actions, suits, proceeding, claims,
demands,  assessments,   judgments,  costs  and  expenses  (including,   without
limitation,  reasonable attorneys fees and disbursements) incident to any of the
foregoing;  provided, however, that if any such action, suit or proceeding shall
be asserted  against AOXY, its current  officers,  directors and stockholders in
respect of which  AOXY,  its current  officers,  directors  and/or  stockholders
propose  to  demand  indemnification,  the  Purchaser  or  Purchasers  from whom
indemnification is demanded, shall be promptly notified to that effect and shall
have the right to assume the control of the defense,  compromise  or  settlement
thereof,  including,  at  its  or  their  own  expense,  employment  of  counsel
reasonably acceptable to the person against whom such indemnification is sought.

         (b) Of Purchasers.  AOXY agrees to defend,  indemnify and hold harmless
each Purchaser, its officers, directors and stockholders, against and in respect
of (i) any and all losses, liabilities, damages, deficiencies, costs or expenses
(including,  without  limitation  reasonable  attorneys fees and  disbursements)
resulting from (A) the breach of any covenant,  warranty or agreement  hereunder
by AOXY or (B) any  representations  made by AOXY in this  Agreement,  not being
complete and correct or being false and  misleading or  containing  any material
misstatement of fact or omitting any material fact required to be stated to make
the  statements  therein not  misleading;  and (ii) any and all actions,  suits,
proceeding,   claims,  demands,  assessments,   judgments,  costs  and  expenses
(including,  without  limitation,  reasonable  attorneys fees and disbursements)
incident to any of the foregoing;  provided,  however,  that if any such action,
suit or  proceeding  shall be asserted  against a Purchaser  in respect of which
such Purchaser, its officers, directors and/or stockholders,  proposes to demand
indemnification,  AOXY shall be promptly  notified to that effect and AOXY shall
have the right to assume the control of the defense,  compromise  or  settlement
thereof,  including,  at their own  expense,  employment  of counsel  reasonably
acceptable to such Purchaser.

         (c) Payment. Any indemnification  payments required pursuant to Section
10(a) and


                                       12
<PAGE>

10(b) hereof shall be paid in FULL within ten (10) days after  receipt of notice
specifying  (i) the amount  required to be paid and (ii) the nature of the event
or events giving rise to indemnification hereunder.

         (d) Liability. The liability of the parties under this Section 10 shall
be without  limitation,  and the failure of either of them to  withhold  amounts
from any payments  shall not act as a waiver of or diminish the  obligations  of
parties under this Section 10.

         (e)  Interest.  Any and all  amounts  which may become due and  payable
pursuant to this  Section 10 shall bear  interest  from the date when due to the
date of payment at a percentage rate of twelve (12%) percent per annum.

    SECTION  11.  COMMISSIONS  FEES  AND  EXPENSES.  Purchasers  and  AOXY  each
represent  and  warrant  to the other  that the  negotiations  relative  to this
Agreement  and the  transactions  contemplated  hereby  have been  carried on by
Purchasers and AOXY directly and in such manner as not to give rise to any valid
claim  against  either for a brokerage  commission,  finder's  fee or other like
payment except that AOXY is negotiating  with Stephen Golub to compensate him as
a finder.  AOXY is responsible  for and shall pay at closing the fees of Kieffer
and Hahn, its counsel,  in connection with the preparation an negotiation of the
documentation in connection  herewith and in connection with the closing of this
transaction.

    SECTION  12.  APPLICABLE  LAW.  This  Agreement  shall be  governed  by, and
construed in accordance  with, the law of the State of Delaware  (other than its
law with respect to conflicts of laws),  including all matters of  construction,
validity and performance.

    SECTION 13. NOTICES. All notices, requests, permissions,  waivers, and other
communications  hereunder  shall be in writing  and shall be deemed to have been
duly given if signed by the  respective  persons giving them (in the case of any
corporation  the signature shall be by an officer thereof and delivered by hand,
sent via facsimile transmission, nationally-recognized overnight courier service
or deposited in the United States mail (registered,  return receipt  requested),
properly  addressed and postage prepaid to the intended recipient thereof to the
address for such  person on the  signature  page(s)  hereof.  All such  notices,
requests,  consents  and  other  communications  shall be  deemed  to have  been
delivered (a) in the case of personal delivery or delivery by telescope,  on the
date of such  delivery,  (b) in the case of dispatch by  nationally-  recognized
overnight  courier,  on the next business day following such dispatch and (c) in
the case of mailing,  on the third  business day after the posting  thereof Such
names and addresses may be changed by such notice.

    SECTION 14. ENTIRE  AGREEMENT;  AMENDMENTS;  HEADINGS;  COUNTERPARTS  . This
Agreement,  including  the  Schedules  hereto,  all of which are a part  hereof,
contains  the entire  understanding  of the parties  hereto with  respect to the
subject matter  contained  herein and therein,  supersedes and cancels all prior
agreements  with respect  hereto or thereto and may be amended only by a written
instruments  executed by the parties or their respective  successors or assigns.
There are no restrictions, promises, representations,  warranties, agreements or
undertakings  of any party  hereto 


                                       13
<PAGE>

with respect to the transactions under this Agreement other than those set forth
herein or made hereunder in the documents delivered at each Closing. The section
and  paragraph  headings  contained in this  Agreement  and the  description  of
exhibits attached hereto are for reference purposes only and shall not affect in
any way the meaning or interpretation  of this Agreement.  This Agreement may be
executed in one or more  counterparts and each counterpart shall be deemed to be
an original.

     SECTION 15. PARTIES IN INTEREST. Except with the express written consent of
the other parties  hereto,  this Agreement  shall not be assignable or otherwise
transferred in whole or in part.  This  Agreement  shall inure to the benefit of
and be binding upon the parties and their respective successors. Nothing in this
Agreement,  express or implied,  is intended to confer upon any other person any
rights or remedies under or by reason of this Agreement.

     SECTION 16.  SEVERABILITY.  The  invalidity of any portion hereof shall not
affect the validity, force or effect of the remaining portions hereof.

     SECTION 17.  FURTHER  ASSURANCES.  AOXY and  Purchasers  shall  execute and
deliver or cause to be executed and delivered such additional  instruments,  and
take such other actions as the other party may reasonably  request in writing in
order to effectuate the purposes of this Agreement.

                     [Remainder of Page Intentionally Blank]



                                       14
<PAGE>


     [Counterpart Signature Page to Purchase Agreement of December 18, 1997]




         IN  WITNESS  WHEREOF,  the  parties  hereto  have  duly  executed  this
Agreement as of the date first above written.

                              PURCHASERS:


                                   ---------------------------------------------
                                                  [print name]


ATTEST:                            By:  
                                      ------------------------------------------
                                      Name:  
- -----------------------------         Title:  
       Secretary

                                   Address for Notices:

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

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

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


                                   ADVANCED OXYGEN TECHNOLOGIES, INC.

                                   By: /s/ Harry Edelson
                                      ------------------------------------------
                                      Name:  Harry Edelson
                                      Title:  Chairman


                                   Address for Notices

                                   c/o ETP
                                   300 Tice Boulevard, Woodcliffe Lake, NJ
                                   Telecopier:  (201) 930-8899


                                       15

<PAGE>

     [Counterpart Signature Page to Purchase Agreement of December 18, 1997]



         IN  WITNESS  WHEREOF,  the  parties  hereto  have  duly  executed  this
Agreement as of the date first above written.

                              PURCHASERS:

                                   Crossland Ltd. (Belize)
                                   ---------------------------------------------
                                                  [print name]


ATTEST:                            By:  /s/ L.H. Osterlolt
                                      ------------------------------------------
Bahamas Company Services Ltd.         Name:  L.H. Osterlolt
                                      Title:  Vice President
/s/ Annabel Howorth
- -------------------------------
      Secretary
                                   Address for Notices:

                                   Crossland, Ltd. (Belize)
                                   104B Saffrey Square
                                   Bank Lane and Bay Street
                                   Box N-1612
                                   Nassau, Bahamas


                                   ADVANCED OXYGEN TECHNOLOGIES, INC.

                                   By: 
                                      ------------------------------------------
                                      Name:  Harry Edelson
                                      Title:  Chairman


                                   Address for Notices

                                   c/o ETP
                                   300 Tice Boulevard, Woodcliffe Lake, NJ
                                   Telecopier:  (201) 930-8899


                                       15


<PAGE>

     [Counterpart Signature Page to Purchase Agreement of December 18, 1997]




         IN  WITNESS  WHEREOF,  the  parties  hereto  have  duly  executed  this
Agreement as of the date first above written.

                              PURCHASERS:

                                   Coastal Oil, Ltd.
                                   ---------------------------------------------
                                                  [print name]


ATTEST:                            By:  /s/ Dr. M. Noguera
                                      ------------------------------------------
   Illegible                          Name:  M. Noguera
- -----------------------------         Title:  President
       Secretary

                                   Address for Notices:

                                   Coastal Oil, Ltd.
                                   40 Santa Rita Road
                                   Corozal, Belize, Central America



                                   ADVANCED OXYGEN TECHNOLOGIES, INC.

                                   By: 
                                      ------------------------------------------
                                      Name:  Harry Edelson
                                      Title:  Chairman


                                   Address for Notices

                                   c/o ETP
                                   300 Tice Boulevard, Woodcliffe Lake, NJ
                                   Telecopier:  (201) 930-8899



                                       15

<PAGE>

     [Counterpart Signature Page to Purchase Agreement of December 18, 1997]




         IN  WITNESS  WHEREOF,  the  parties  hereto  have  duly  executed  this
Agreement as of the date first above written.

                              PURCHASERS:

                                   Easternstar Ltd.
                                   ---------------------------------------------
                                                  [print name]


ATTEST:                            By:  /s/ Roberta Montgomery
                                      ------------------------------------------
Bahamas Company Services Ltd.         Name:  Roberta Montgomery
       Illegible                      Title:  Vice President
- --------------------------------
       Secretary

                                   Address for Notices:

                                   Eastern Star, Ltd.
                                   104B Saffrey Square
                                   Bank Lane and Bay Street
                                   Box N-1612
                                   Nassau, Bahamas


                                   ADVANCED OXYGEN TECHNOLOGIES, INC.

                                   By: 
                                      ------------------------------------------
                                      Name:  Harry Edelson
                                      Title:  Chairman


                                   Address for Notices

                                   c/o ETP
                                   300 Tice Boulevard, Woodcliffe Lake, NJ
                                   Telecopier:  (201) 930-8899


                                       15
<PAGE>


     [Counterpart Signature Page to Purchase Agreement of December 18, 1997]




         IN  WITNESS  WHEREOF,  the  parties  hereto  have  duly  executed  this
Agreement as of the date first above written.

                              PURCHASERS:


                                   Crossland Ltd. (Belize)
                                   ---------------------------------------------
                                                  [print name]


ATTEST:                            By:  /s/ Anthony J.R. Howorth
                                      ------------------------------------------
Bahamas Company Services Ltd.         Name:  Anthony J.R. Howorth
                                      Title:  President
/s/ Pauline Cox
- --------------------------------
       Secretary

                                   Address for Notices:

                                   Crossland, Ltd. (Belize)
                                   60 Market Street
                                   P.O. Box 364
                                   Belize City, Belize, Central America


                                   ADVANCED OXYGEN TECHNOLOGIES, INC.

                                   By: 
                                      ------------------------------------------
                                      Name:  Harry Edelson
                                      Title:  Chairman


                                   Address for Notices

                                   c/o ETP
                                   300 Tice Boulevard, Woodcliffe Lake, NJ
                                   Telecopier:  (201) 930-8899


                                       15
<PAGE>


     [Counterpart Signature Page to Purchase Agreement of December 18, 1997]


         IN  WITNESS  WHEREOF,  the  parties  hereto  have  duly  executed  this
Agreement as of the date first above written.

                              PURCHASERS:


                                   ---------------------------------------------
                                                  [print name]

ATTEST:                            By:  
                                      ------------------------------------------
- -------------------------------       Name:  
       Secretary                      Title:  


                                   Address for Notices:

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

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

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


                                   ADVANCED OXYGEN TECHNOLOGIES, INC.

                                   By: /s/ Harry Edelson
                                      ------------------------------------------
                                      Name:  Harry Edelson
                                      Title:  Chairman


                                   Address for Notices

                                   c/o ETP
                                   300 Tice Boulevard, Woodcliffe Lake, NJ
                                   Telecopier:  (201) 930-8899


                                       15

<PAGE>

                                   EXHIBIT A
                                   ---------

                                   US PERSON

1. "US Person" means:

     (i)    Any natural person resident in the United States;

     (ii)   Any partnership or corporation  organized or incorporated  under the
            laws of the United States;

     (iii)  Any estate of which any executor or administrator is a US person;

     (iv)   Any trust of which any trustee is a US person;

     (v)    Any  agency  or branch of a foreign  entity  located  in the  United
            States;

     (vi)   Any  non-discretionary  account or similar  account  (other  than an
            estate or trust) held by a dealer or other fiduciary for the benefit
            or account of a US person;

     (vii)  Any  discretionary  account or similar account (other than an estate
            or  trust)   held  by  a  dealer  or  other   fiduciary   organized,
            incorporated,  or (if an individual)  resident in the United States;
            and

     (viii) Any  partnership  or corporation  if: (A) organized or  incorporated
            under the laws of any foreign  jurisdiction;  and (B) formed by a US
            person  principally  for the purpose of investing in securities  not
            registered  under the Act,  unless it is organized or  incorporated,
            and owned,  by accredited  investors (as defined in Rule 501(a)) who
            are not natural persons, estates or trusts.

2.  Notwithstanding  paragraph  I of this  rule,  any  discretionary  account or
similar  account (other than an estate or trust) held for the benefit or account
of a non-US  person  by a  dealer  or other  professional  fiduciary  organized,
incorporated,  or (if an individual)  resident in the United States shall not be
deemed a "US person."

3. Notwithstanding  paragraph 1, any estate of which any professional  fiduciary
acting as  executor  or  administrator  is a US person  shall not be deemed a US
person if:

     (i)    An  executor or  administrator  of the estate who is not a US person
            has sole or shared investment  discretion with respect to the assets
            of the estate; and

     (ii)   The estate is governed by a foreign law.

4.  Notwithstanding  paragraph I, any trust of which any professional  fiduciary
acting as Trustee,

<PAGE>

is a US person  shall  not be  deemed a US  person if a trustee  who is not a US
person  has sole or  shared  investment  discretion  with  respect  to the trust
assets,  and no  beneficiary  of the  trust  (and no  settler  if the  trust  is
revocable) is a US person.

5.  Notwithstanding  paragraph  1, an  employee  benefit  plan  established  and
administered  in  accordance  with the law of a country  other  than the  United
States and customary  practices and  documentation  of such country shall not be
deemed a US person.

6.  Notwithstanding  paragraph  1, any  agency or branch of a US person  located
outside the United States shall not be deemed a "US person" if:

     (i)    The agency or branch operates for valid business reasons; and

     (ii)   The agency or branch is  engaged in the  business  of  insurance  or
            banking  and  is  subject  to   substantive   insurance  or  banking
            regulation, respectively, in the jurisdiction where located.

7. The International  Monetary Fund, the International  Bank for  Reconstruction
and Development,  the  Inter-American  Development  Bank, the Asian  Development
Bank, the African  Development  Bank, the United  Nations,  and their  agencies,
affiliates and pension plans, and any other similar international organizations,
their agencies, affiliates and pension plans shall not be deemed "US persons."



<PAGE>

                                 Schedule 4(a)

                            Purchasers' Subsidiaries
                            ------------------------


                                      NONE
<PAGE>

                                 Schedule 3(s)

                              Compliance with Laws
                              --------------------


AOXY has not held an annual meeting since October, 1993. AOXY's qualification to
transact business in California has not been maintained.

<PAGE>

                                 Schedule 3(o)


Directors:

     Harry Edelson
     Emile A. Battat
     Richard O. Jacobson
     Albert James

Officers:

     Harry Edelson            Chairman of the Board and
                                Chief Executive Officer, President, Chief
                                Financial Officer and Director

Banks:

     None


<PAGE>

                                 Schedule 3(m)

                               Contracts of AOXY
                               -----------------

In August  1995 in order to retain  senior  management,  AOXY  agreed to pay Mr.
Kopetz,  Ms.  Castle  and David  Overmyer,  AOXY's  controller,  a bonus if AOXY
successfuly  completed a sale of AOXY or its  technology  by May 31,  1995.  The
bonus would equal 55 of the first million dollars of the gross proceeds from the
Patent Sale, 4% of the next million  dollars of such gross  proceeds,  3% of the
third million,  2% of the fourth million and 1% of all amounts received from the
Patent  Sale over 4 million.  This bonus is shared  equally by Mr.  Kopetz,  Ms.
Castle and Mr.  Overmyer.  Upon the closing,  they  received,  in the  aggregate
$16,750.00 or $5,583.33  each. As no other  royalties have been received to date
from W.R.  Grace,  no additional  sums have been paid. All such bonus is payable
only from the Grace royalty. At closing, the above mentioned liabilities of AOXY
shall have been  assigned  to and  assumed  by AOXY  Liquidation  Inc.  with the
consent of the creditors.


<PAGE>

                                 Schedule 1.01

                                   Purchasers
                                   ----------

                                                       Number of     Number of
Name                                      $ Amount     Sale Shares   Comp.Shares
- ------------------------------------      ----------   -----------   -----------

Crossland, Ltd. (Belize)                  $15,000.00   1,500,000     4,437,500
60 Market Square
PO Box 364
Belize City, Belize, Central America

Eastern Star, Ltd.                        $15,000.00   1,500,000     4,437,500
104B Saffrey Square
Bank Lane and Bay Street
Box N-1612
Nassau, Bahamas

Costal Oil, Ltd.                          $15,000.00   1,500,000     4,437,500
40 Santa Rita Road
Corazal, Belize, Central America

Crossland, Ltd. 104B Saffrey Square       $15,000.00   1,500,000     4,437,500
Bank Lane and Bay Street
Box N-1612
Nassau, Bahamas


<PAGE>
                                                                 Exhibit B
                                                                 Execution (iii)

                               PURCHASE AGREEMENT

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



         THIS  AGREEMENT  made as of the 18th day of  December,  1997,  (herein,
together with the Schedules attached hereto,  referred to as "Agreement") by and
among the persons listed on Schedule 1 hereto (herein  referred to  collectively
as  "Purchasers"  and each a  "Purchaser")  and the persons listed on Schedule 2
hereto (herein referred to collectively as "Sellers" and each a "Seller").

         In reliance upon the  representations and warranties made herein and in
consideration of the mutual agreements herein contained the parties hereby agree
as follows:

     SECTION 1. SALE AND PURCHASE OF STOCK.

         1.01 Sale of Stock to  Purchasers.  Sellers shall at the closing of the
transactions  hereinafter  provided  sell,  transfer,   assign  and  deliver  to
Purchasers  an  aggregate  of  eight  hundred  thousand  (800,000)  shares  (the
"Shares") of the capital stock of Advanced Oxygen Technologies, Inc., a Delaware
Corporation,  ("AOXY") in an amount to each Purchaser as set forth on Schedule 2
hereto.

         1.02  Consideration  for  Stock.  In  consideration  of the sale of the
Shares,  (a) Purchasers  shall pay to Sellers the aggregate  amount of US$10,000
(the  "Purchase  Price") in the form of an  official  bank check or a  certified
check of the  Purchasers  payable  to each  Seller in the  amount  specified  on
Schedule 1 hereto and (b) Seller shall be retained by AOXY as a  consultant  for
one month on an "as  available"  basis in  consideration  of  450,000  shares of
common  stock of AOXY  delivered  by AOXY to Seller at the Closing  which shares
shall be  registered  by AOXY on Form S-8, or such other form as  available,  as
soon as practicable after Closing, and shall have full "piggyback"  registration
rights in any other registration of securities of AOXY.

         1.03  Transactions on the Closing Date. (a) Delivery of Shares.  At the
Closing, Sellers will deliver to Purchasers stock certificates, representing the
shares duly endorsed for transfer with their respective signatures guaranteed in
form acceptable to the transfer agent of AOXY; and

              (b) Delivery of  Consideration.  At the Closing,  Purchasers  will
deliver  to each  Seller an  official  bank  check or a  certified  check of the
Purchasers payable to each Seller in the amount of the Purchase Price payable to
such Seller as set forth on Schedule 1.

              (c)  Resignations.  Resignations  of  all  of  the  directors  and
officers of AOXY other than those  designated in writing by Purchasers  prior to
the Closing Date to remain on the board or in office; and

              (d)  Documents.   Each  of  the  documents  contemplated  by  this
Agreement.


<PAGE>


     SECTION 2.  CLOSING.  The Closing will take place at the offices of Kieffer
and Hahn, 111 Broadway,  New York, New York 10006,  at 10:00 A.M. on the date of
execution and delivery hereof by all of the parties.

     SECTION 3.  REPRESENTATIONS AND WARRANTIES OF SELLERS.  Each Seller, as and
for himself or itself,  severally and not jointly,  represents  and warrants the
following to the best of his or its knowledge without independent investigation:

         (a)  Organization  and  Standing.   (1)  AOXY  is  a  corporation  duly
organized, validly existing, and in good standing under the laws of the State of
Delaware, the State of its incorporation,  and is authorized to conduct business
in and is in good  standing in each  jurisdiction  in which the character of the
properties owned by it or the nature of the business transacted by it makes such
license or qualification necessary.

              (2) The  certified  copies  heretofore  delivered to AOXY,  of the
certificate of  incorporation,  of all licenses to transact  business and of the
by-laws of AOXY with all  amendments  to the date hereof are true,  complete and
correct.

              (3) AOXY has no subsidiaries.

         (b) Capital Stock. (1) The capital stock of AOXY consists of (A) thirty
million  (30,000,000)  shares of common stock, par value one cent (US $0.01) per
share  of which  five  million  six  hundred  ninety-six  thousand  two  hundred
fifty-two (5,696,252) shares have been validly issued and are fully paid and are
non-assessable  and are fully  transferable,  three  hundred fifty four thousand
(354,000)  shares  which shall be issued upon  conversion  of 177,000  shares of
preferred  stock  (172,000  shares of preferred  stock shall be  converted  into
344,000  shares on the date of  Closing)  and one  hundred  forty five  thousand
(145,000)  shares of which shall be issued upon  exercise of options and (B) ten
million  (10,000,000) shares of preferred stock par value one cent (US $.01) per
share of which  177,000  (172,000  shares of preferred  stock shall be converted
into 344,000 shares on the date of Closing)  shares have been validly issued and
are fully paid and are non-assessable and are fully transferable.

              (2) None of the  issued and  outstanding  shares is subject to any
voting trust agreement or other agreement relating to the voting thereof.

              (3) None of the authorized but unissued shares of AOXY are subject
to any warrants, obligations,  subscriptions, options, convertible securities or
other commitments under which they are or may be required to be issued.

              (4) No transfer  tax will be payable  with respect to the issuance
of AOXY's stock contemplated hereby.


                                       2

<PAGE>


         (c) Stock  Ownership.  Each Seller shall issue to Purchasers at Closing
authorized  common  stock of AOXY  which is free and clear of any  encumbrances,
liens or  restrictions  on sale,  other  than  those  applicable  to  restricted
securities  as  defined  under  the  rules and  regulations  promulgated  by the
Securities and Exchange Commission.

         (d) Validity of  Agreement;  Authority.  This  Agreement  has been duly
executed and delivered by each Seller and (assuming valid execution and delivery
by Purchasers) is a valid and binding obligation, enforceable in accordance with
its terms.

         (e)  Authority to take Action.  (1) The  execution and delivery of this
Agreement  and  delivery  of the  subject  shares  and the  carrying  out of the
provisions hereof will not contravene any provisions of law, any order, judgment
and/or  decree  of any  court  or other  governmental  agency  or each  Seller's
certificate of incorporation,  by-laws, charter,  partnership agreement, if any,
or any indenture,  agreement or other instrument to which a Seller is a party or
by which a Seller may be bound,  or by which any property  owned by a Seller may
be bound.

              (2) All legal actions required to be taken in connection with this
Agreement pursuant to the laws of any State or other governmental authority have
been so taken.

         (f) Accounts Receivable. AOXY has no accounts receivable.

         (g)  Liabilities of AOXY. AOXY has no liabilities or obligations of any
nature, whether accrued, absolute,  contingent or otherwise,  including, without
limitation,  tax liabilities due or to become due, except for (1)  approximately
US$45,000  of  accounts  payable,  (2) the  fees  and  expenses  of  counsel  in
connection  herewith and (3) amounts due and payable to certain of its directors
as  evidenced  by  Promissory  Notes  issued to such  persons  in the  aggregate
principal  amount of $275,000 plus the interest  accrued thereon which are to be
spun-off to the liquidating trust as set forth in section.

         (h) No Dividends or  Distributions.  Since June 30, 1995,  AOXY has not
declared,   set  aside  or  paid  to  its  stockholder  any  dividend  or  other
distribution  in  respect of its  capital  stock or  redeemed  or  purchased  or
otherwise acquired any of its capital stock or agreed to take any such action.

         (i) Absence of Material Changes or Events.  Except for matters publicly
disclosed  on (1) AOXY's  Proxy  Statement  in  connection  with the sale of its
oxygen control  technology to W.R. Grace  ("Grace") in February 1995; (2) AOXY's
Reports on Form 10-KSB with respect to AOXY's  fiscal years ended June 30, 1993,
1994  and 1995 and (3)  AOXY's  Reports  on Form  10-Q for the  quarters  ending
September  30, 1995 and  December  31, 1995 and AOXY's  8-K's filed prior hereto
copies of which have been heretofore  delivered to Sellers,  since June 30, 1995
there has been no event or condition of any character,  materially and adversely
affecting  AOXY's  financial  position,   assets,   liabilities  (contingent  or
otherwise),  results of operation,  business or business prospects, and AOXY has
not:


                                       3

<PAGE>

              (1)  Incurred any  obligation  or  liability  (absolute,  accrued,
contingent, or otherwise) except in the ordinary course of business or except in
connection with the performance of this Agreement;

              (2)  Mortgaged,  pledged  or  subjected  to lien,  charge or other
encumbrance, any of its assets, tangible or intangible;

              (3) Sold or transferred any of its assets or canceled any debts or
claims, or waived any right of substantial value;

              (4) Made or committed to make any single  capital  expenditure  in
excess of five hundred dollars ($500.00),  or capital  expenditures in excess of
one thousand dollars  ($1,000.00) in the aggregate or purchased or contracted to
purchase any land;

              (5) Sustained any damage,  destruction  or loss of its property in
excess of five hundred dollars ($500.00) whether or not covered by insurance;

              (6) Increased  the  compensation  payable or to become  payable by
AOXY to any of its  officers,  employees  or  agents,  or any bonus  payment  or
arrangement made to or with any of them;

              (7) Agreed to modify in any material respect any contract or other
instrument  to which AOXY is a party  except for the patent  purchase  agreement
with Grace;

              (8)  Increased or changed the medical  insurance  provided for the
benefit of its employees and their families.

              (9)  Increased  or  changed  the  amount of  disability  insurance
provided for the benefit of its employees;

              (10)  Entered  into any  transaction  other  than in the  ordinary
course of business; or

              (11) Made any material  change in any method of  accounting or any
accounting practice.

         (j) Title to Property. AOXY has no material assets.

         (k) Buildings,  Equipment and Motor  Vehicles.  AOXY is the owner of no
buildings, equipment or motor vehicles.

         (l) Tax Status.  (1) AOXY has heretofore  furnished to Sellers true and
complete copies of all federal,  state,  local and foreign income tax returns of
AOXY filed for the three (3) years


                                       4

<PAGE>


ended  June 30,  1995.  Said tax  returns  of AOXY have not been  audited by the
applicable  taxing  authorities.  No agreements made by AOXY for an extension of
time for the  assessment  of any tax are now in  effect.  All  taxes,  including
interest and penalties thereon,  shown on said tax returns to be due and payable
by AOXY,  or required to be withheld by AOXY on or before the date hereof,  have
been paid or fully reserved for and withheld and no formal written claim for any
tax,  assessment  or levy for which AOXY may become  liable exists which has not
been settled.

              (2) All other taxes,  due and payable at the Closing  Date, of any
kind whatsoever,  including, but not limited to, estimated income tax, franchise
tax, excise tax, doing business tax, payroll tax, personal property tax, use tax
and sales tax have been paid or fully reserved for and withheld.

         (m) Status of Contracts.  Except as reflected on Schedule 3(m). AOXY is
not a party  to any  written  or oral (i)  contract  for the  employment  of any
officer  or  individual  employee,  or  any  pension,   profit  sharing,  bonus,
retirement,  stock option or similar incentive or deferred  compensation plan or
arrangement in effect with its officers,  employees or others;  (ii)  continuing
contract for the  acquisition  of real estate or fixed assets;  (iii)  financing
arrangement involving the mortgaging,  pledging or other hypothecation of assets
or  involving  borrowing  which may not be repaid in part or in full on not more
than thirty (30) days' notice with  reference to unearned or amortized  discount
and  without  premium  or  penalty;  (iv)  contract  with any labor  union;  (v)
continuing  contract for the future  purchase of  materials  or  supplies;  (vi)
contract with any agent,  representative  or  distributor;  (vii) any instrument
evidencing or related to  indebtedness  for borrowed money, or pursuant to which
AOXY  is  obligated  to  borrow  money;  (viii)  any  contract,  arrangement  or
understanding under which AOXY has assumed,  guaranteed,  endorsed, or otherwise
become liable in connection with the obligation of any individual,  partnership,
corporation  or other  entity;  (ix) any  contract  not  included  in any of the
foregoing  which  involves  payment  by AOXY of more than five  hundred  dollars
($500.00).  True and complete  copies of all items listed in Schedule  3(m) have
been delivered to AOXY. The parties to such  instruments  have complied with all
the provisions thereof, and they are not in default under any of them.

         (n) Status of Leases.  AOXY is not a party to any leases except for the
lease of document  storage space at Pacific Mini Storage,  1913 Sherman  Street,
Alameda, California.

         (o) Directors and Officers;  Compensation;  Banks. Schedule 3(o) hereto
contains a true an  complete  list  showing (i) the names of all  directors  and
officers of AOXY; (ii) the names of all persons whose compensation from AOXY for
the period beginning July 1, 1995 and ending March 31, 1996 will equal or exceed
ten thousand dollars  ($10,000.00)  together with a statement of the full amount
paid or payable to each such person for  services  rendered or to be rendered in
such  period and the basis  therefor;  (iii) the name of each bank in which AOXY
has an account,  or safe deposit box, and the names of all persons authorized to
draw thereon,  or to have access thereto;  (iv) the names of all persons holding
powers of attorney from AOXY, and a summary statement of the terms thereof;  and
(v) all credit cards and similar accounts on which AOXY may be liable.


                                       5


<PAGE>


         (p) Status of Insurance. AOXY has no insurance.

         (q)  Permits  and  Licenses.  AOXY is not  required  to  have  permits,
licenses,  approvals, and authorization of all federal, state, local and foreign
authorities and is presently not conducting any business.

         (r) Litigation.  There is no action, suit,  proceeding or investigation
pending,  or to the  knowledge of AOXY  threatened,  against or  affecting  AOXY
before any court,  arbitrator or administrative or governmental body and AOXY is
not  presently  subject to or in default in respect of any order,  injunction or
decree of any court or government instrumentality.

         (s) Compliance with Laws. Except as reflected on Schedule 3(s), AOXY is
not in  violation of any law,  regulation  or ordinance  which  violation  would
materially and adversely affect it or its operations.

         (t) Books of Accounts and Other Records.  The books of account, and the
minute books,  stock  certificate  books and ledgers of AOXY at the Closing Date
will,  in all  material  respects,  be correct  and  complete  and such books of
account and ledgers will fairly  present the  operations  of AOXY in  accordance
with generally accepted accounting principles.

         (u) Employee Benefit Plans.  AOXY is not party to any bonus,  incentive
compensation, profit-sharing, pension, retirement, stock purchase, stock option,
deferred  compensation,   hospitalization,   group  insurance,   death  benefit,
disability,   collective  bargaining  and  other  fringe  benefit  plans,  trust
agreements, arrangements or commitments.

     SECTION 4. REPRESENTATIONS AND WARRANTIES OF PURCHASERS. Each Purchaser, as
and for itself or himself,  severally and not jointly,  represents  and warrants
the following:

         (a)  Organization  and  Standing.  (1) Each  corporate  Purchaser  is a
corporation  duly organized,  validly  existing,  and in good standing under the
laws of the place of its incorporation.

              (2) The copy heretofore  delivered to Sellers,  of the certificate
of incorporation  or charter of each corporate  Purchaser with all amendments to
the date hereof are true, complete and correct.

              (3) Each corporate  Purchaser has no  subsidiaries,  except as set
forth on Schedule 4(a).

         (b) Validity of  Agreement;  Authority.  This  Agreement  has been duly
executed and  delivered by the  Purchasers  and  (assuming  valid  execution and
delivery by the Sellers) is a valid and binding  obligation  of each  Purchaser,
enforceable in accordance with its terms.

         (c)  Authority to take Action.  (1) The  execution and delivery of this
Agreement  and  


                                       6


<PAGE>


delivery of the subject  shares and the  carrying out of the  provisions  hereof
will not contravene any provisions of law, any order,  judgment and/or decree of
any court or other governmental agency or any corporate Purchaser's  certificate
of  incorporation  or  charter,  by-laws or any  indenture,  agreement  or other
instrument to which any Purchaser is a party or by which it may be bound,  or by
which any property owned by it may be bound.

              (2) All  corporate  and  legal  actions  required  to be  taken in
connection  with  this  Agreement  pursuant  to the  laws of any  State or other
governmental authority have been so taken.

         (c)  Compliance  with Laws.  No Purchaser  has  received  notice of any
violation of any law,  regulation or ordinance which violation would  materially
and adversely affect it or its operations.

         (d)  Consents.  No Purchaser is required to obtain  consent,  approval,
registration,  qualification or filing with any United States federal,  state or
local  government  authority or any foreign  government  authority in connection
with  such  Purchaser's  execution  of this  Agreement  or  consummation  of the
transactions  contemplated  hereby,  other than the  required  filings  with the
United States Securities and Exchange Commission.

         (e)  Investment  Purposes.  Each  Purchaser is acquiring the Shares for
investment,  for its own  account,  and not with a view  to,  or for  resale  in
connection  with,  any   distribution  of  any  part  thereof.   Each  Purchaser
acknowledges  that each Seller is selling the Shares  hereunder in reliance upon
an exemption from the registration  provisions of the Securities Act of 1933, as
amended (the "Act") which depends upon, among other things, the bona fide nature
of the investment  intent and accuracy of such  Purchaser's  representations  as
expressed  herein.  Each  Purchaser  is able to fend  for  itself,  can bear the
economic  risk of this  investment  and has such  knowledge  and  experience  in
financial  or business  matters that it can evaluate the merits and risks of the
investment.  Each  Purchaser,  except for  Robert E.  Wolfe,  is an  "accredited
investor"  within the meaning of Rule 501(a) of Regulation D  promulgated  under
the Securities Act.

         Except  as  set  forth  in  this  Agreement,   no   representations  or
warranties,  oral or otherwise, have been made to Purchasers,  including without
limitation,  any representations concerning the future prospects of AOXY, by any
Seller, by any agent of any Seller, any employees or affiliates of any Seller or
by any other  person  whether or not  associated  with this  transaction  and in
entering into this transaction Purchaser is not relying upon any information.

         Without  in any way  limiting  the  representations  set  forth  above,
Purchaser  further  agrees not to make any  disposition of all or any portion of
the Shares that constitutes  "restricted  securities"  delivered pursuant hereto
unless  (1)  there is then in  effect a  Registration  Statement  under  the Act
covering the  proposed  disposition  and  disposition  is made  according to the
Registration  Statement;  or (2) the  transferee  has agreed in writing  for the
benefit of AOXY to be bound by the  restrictions  set forth in this section,  to
the extent applicable;  and each Purchaser has furnished AOXY with an opinion of
counsel, reasonably satisfactory to AOXY, that such disposition will not


                                       7


<PAGE>


require registration of the shares under the Act.

     SECTION 5. CONDITIONS  PRECEDENT TO PURCHASERS'  OBLIGATION TO COMPLETE THE
TRANSACTION.  The obligation of each  Purchaser to consummate  the  transactions
described  in  Section 1 hereof is  subject  to the  fulfillment  of each of the
following conditions prior to or at the Closing:

         (a) Delivery of Shares.  Each Purchaser shall have received delivery of
the Shares as contemplated herein.

         (b) Spin-off. AOXY shall have spun-off good and marketable title to its
rights to  royalties  from W. R. Grace  (its only  material  asset) and  certain
liabilities  including  only amounts due to former  employees as a result of the
receipt of the royalties and notes payable to certain directors in the aggregate
principal amount of $275,000 plus the interest earned thereon.

         (c) Other Creditors.  AOXY shall have achieved  settlement in an amount
and on terms reasonably satisfactory to each Purchaser of all of the liabilities
of AOXY, including,  without limitation, all accounts payable, if any, and other
accrued expenses, if any.

         (d)  Resignation  of  Directors  and  Officers.   Upon  appointment  of
directors  chosen by Purchasers  to fill the existing  vacancies on the board of
directors of AOXY, all directors and officers not so chosen by Purchasers  shall
have tendered to AOXY their resignations as directors and/or officers of AOXY.

         (e) Conversion of Preferred  Stock.  All of the issued and  outstanding
preferred stock of AOXY shall have been converted to common stock of AOXY except
for 5,000 shares.

         (f) Stock Acquisition  Agreement.  The transaction  contemplated in the
Stock  Acquisition  Agreement,  dated  the  date  hereof,  among  AOXY  and  the
purchasers, parties thereto, related to the sale by AOXY of 23,750,000 shares of
the common stock of AOXY shall have closed simultaneously herewith.

         (g) Representations and Warranties of Sellers.  The representations and
warranties  made by each Seller herein shall be true and correct in all material
respects.

         (h) No actions or proceedings. No action or proceeding shall be pending
or threatened  on the Closing Date wherein an  unfavorable  judgment,  decree or
order would prevent or make unlawful the carrying out of this Agreement or would
cause the  transaction  contemplated  by this Agreement to be rescinded or would
require a Purchaser to divest itself of the shares to be acquired.

         It is  understood  that the  certificates  evidencing  the Shares  sold
pursuant hereto may bear legends in substantially the following form:


                                       8


<PAGE>


         THE  SECURITIES   REPRESENTED  BY  THIS  CERTIFICATION  HAVE  NOT  BEEN
         REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "ACT"). IN
         THE ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT UNDER THE ACT, THESE
         SECURITIES MAY NOT BE SOLD, TRANSFERRED OR OTHERWISE DISPOSED OF EXCEPT
         PURSUANT TO AN APPLICABLE EXEMPTION FROM THE REGISTRATION  REQUIREMENTS
         OF SAID ACT AND UPON  OBTAINING  AN OPINION  OF  COUNSEL  (WHICH MAY BE
         COUNSEL  TO  THE  COMPANY)   SATISFACTORY  TO  THE  COMPANY  THAT  SUCH
         DISPOSITION MAY BE MADE WITHOUT  REGISTRATION UNDER SAID ACT, OR UNLESS
         SOLD PURSUANT TO RULE 144.

     SECTION 6.  CONDITIONS  PRECEDENT  TO SELLERS'  OBLIGATION  TO COMPLETE THE
TRANSACTION.  The  obligation  of each  Seller to  consummate  the  transactions
described  in  Section 1 hereof is  subject  to the  fulfillment  of each of the
following conditions prior to or at the Closing:

         (a) Purchase Price.  Each Seller shall have received the purchase price
to which each such Seller is entitled hereunder.

         (b) Spin-off. AOXY shall have spun-off good and marketable title to its
rights to  royalties  from W. R. Grace  (its only  material  asset) and  certain
liabilities  including  only amounts due to former  employees as a result of the
receipt of the royalties and notes payable to certain directors in the aggregate
principal amount of $275,000 plus the interest earned thereon.

         (c) Representations  and Warranties of Purchasers.  The representations
and warranties  made by the  Purchasers  herein shall be true and correct in all
material respects.

         (d) No actions or proceedings. No action or proceeding shall be pending
or threatened  on the Closing Date wherein an  unfavorable  judgment,  decree or
order would prevent or make unlawful the carrying out of this Agreement or would
cause the transaction contemplated by this Agreement to be rescinded.

     SECTION 7. SURVIVAL OF REPRESENTATIONS AND WARRANTIES.  All representations
and warranties  contained herein or made in writing by the parties in connection
with the  transactions  contemplated  hereby  shall  survive the  execution  and
delivery of this Agreement and the closing of the  transactions  contemplated by
this  Agreement,  regardless  of any  investigation  made by or on behalf of the
parties or any payment for and  acceptance of stock  hereunder.  All  statements
contained in any certificate,  list, letter or other instrument  delivered by or
on behalf of the parties  pursuant hereto or in connection with the transactions
contemplated   hereby   (including   statements,   letters  or  certificates  of
independent  parties such as public  accountants or attorneys)  shall constitute
representations and warranties by the parties hereunder.


                                       9



<PAGE>


     SECTION 8. INDEMNIFICATION.  (a) Of Sellers and AOXY. Each Purchaser agrees
to defend,  indemnify and hold harmless  Sellers and AOXY against and in respect
of (i) any and all losses, liabilities, damages, deficiencies, costs or expenses
(including,  without  limitation  reasonable  attorneys fees and  disbursements)
resulting from (A) the breach of any covenant,  warranty or agreement  hereunder
by such  Purchaser  or (B) any  representations  made by such  Purchaser in this
Agreement,  not being  complete  and  correct or being false and  misleading  or
containing  any material  misstatement  of fact or omitting  any  material  fact
required to be stated to make the statements  therein not  misleading;  and (ii)
any and all actions, suits, proceeding, claims, demands, assessments, judgments,
costs and expenses (including, without limitation, reasonable attorneys fees and
disbursements) incident to any of the foregoing;  provided, however, that if any
such action,  suit or proceeding  shall be asserted  against Sellers and AOXY in
respect  of which  Sellers  or AOXY  propose  to  demand  indemnification,  such
Purchaser shall be promptly  notified to that effect and shall have the right to
assume the control of the defense,  compromise or settlement thereof, including,
at their own expense, employment of counsel reasonably acceptable to Sellers.

         (b) Of Purchasers.  Each Seller,  severally and not jointly,  agrees to
defend, indemnify and hold harmless Purchasers against and in respect of (i) any
and  all  losses,  liabilities,   damages,   deficiencies,   costs  or  expenses
(including,  without  limitation  reasonable  attorneys fees and  disbursements)
resulting from (A) the breach of any covenant,  warranty or agreement  hereunder
by such Seller or (B) any representations made by such Seller in this Agreement,
not being  complete and correct or being false and  misleading or containing any
material  misstatement  of fact or omitting  any  material  fact  required to be
stated  to make the  statements  therein  not  misleading;  and (ii) any and all
actions, suits, proceeding,  claims, demands, assessments,  judgments, costs and
expenses   (including,   without  limitation,   reasonable  attorneys  fees  and
disbursements) incident to any of the foregoing;  provided, however, that if any
such action, suit or proceeding shall be asserted against a Purchaser in respect
of which such Purchaser proposes to demand indemnification, all Sellers shall be
promptly  notified  to that  effect  and the  Seller  or  Sellers  against  whom
indemnification  is sought  shall  have the right to assume  the  control of the
defense,  compromise or  settlement  thereof,  including,  at their own expense,
employment of counsel reasonably acceptable to such Purchaser.

         (c) Payment. Any indemnification  payments required pursuant to Section
8(a) and 8(b) hereof shall be paid in full within ten (10) days after receipt of
notice  specifying (i) the amount required to be paid and (ii) the nature of the
event or events giving rise to indemnification hereunder.

         (d) Liability.  The liability of the parties under this Section 8 shall
be without  limitation,  and the failure of either of them to  withhold  amounts
from any payments  shall not act as a waiver of or diminish the  obligations  of
parties under this Section 8.

         (e)  Interest.  Any and all  amounts  which may become due and  payable
pursuant  to this  Section 8 shall bear  interest  from the date when due to the
date of payment at a percentage rate of twelve (12%) percent per annum.

     SECTION 9. COVENANT OF  PURCHASERS.  Purchasers  covenant and agree that in
the 


                                       10


<PAGE>


event  that  within  36 months of the date of the  Closing  1,400,000  shares of
common stock of AOXY (being the approximate  number of shares retained by all of
the Sellers as at the Closing  Date) do not have an  aggregate  market value for
any 10  consecutive  day period  (being  the  closing  price for 10  consecutive
trading days of the  securities on the NASDAQ or any other  National  Securities
Exchange on which the common stock of AOXY,  or its  successor  in interest,  is
traded)  equal to or greater than  US$750,000  less the "value" of any dividends
paid per share on  1,400,000  shares of common stock of AOXY (the "value" of any
such  dividends  being  determined  on the  date  of  distribution  of any  such
dividend, if in cash - at the cash value or, if in securities - at the per share
closing price of the securities on the date of  distribution  and, if none, then
at the per share closing bid price on the date of  distribution),  then AOXY, or
its successor in interest, or the Purchasers, on a pro rata basis, shall deliver
to the AOXY Management Trust, a New Jersey trust, the number of shares of common
stock of AOXY,  or its  successor in  interest,  to bring the value of 1,400,000
plus the value (as defined  above) of any dividends per share paid on $1,400,000
shares of common stock of AOXY, to US$750,000, whether or not any of such shares
are then held by any Seller.

     SECTION 10.  COMMISSIONS,  FEES AND EXPENSES.  Purchasers  and Sellers each
represent  and  warrant  to the other  that the  negotiations  relative  to this
Agreement  and the  transactions  contemplated  hereby  have been  carried on by
Purchaser  and  Sellers  directly  and in such manner as not to give rise to any
valid claim  against  either for a brokerage  commission,  finder's fee or other
like  payment.  AOXY is  responsible  for and shall pay at closing  the fees and
disbursements  of  Kieffer  and  Hahn,  its  counsel,  in  connection  with this
Agreement and the closing of the transactions contemplated herein.

     SECTION 11.  APPLICABLE  LAW.  This  Agreement  shall be  governed  by, and
construed in accordance  with, the law of the State of Delaware  (other than its
law with respect to conflicts of laws),  including all matters of  construction,
validity and performance.

     SECTION 12. NOTICES. All notices, requests, permissions, waivers, and other
communications  hereunder  shall be in writing  and shall be deemed to have been
duly given if signed by the  respective  persons giving them (in the case of any
corporation the signature shall be by an officer thereof) and delivered by hand,
sent via facsimile transmission, nationally-recognized overnight courier service
or deposited in the United States mail (registered,  return receipt  requested),
properly  addressed and postage prepaid to the intended recipient thereof to the
address for such  person on the  signature  page(s)  hereof.  All such  notices,
requests,  consents  and  other  communications  shall be  deemed  to have  been
delivered (a) in the case of personal  delivery or delivery by telecopy,  on the
date of such  delivery,  (b) in the case of  dispatch  by  nationally-recognized
overnight  courier,  on the next business day following such dispatch and (c) in
the case of mailing,  on the third business day after the posting thereof.  Such
names and addresses may be changed by such notice.

     SECTION 13.  ENTIRE  AGREEMENT;  AMENDMENT;  HEADINGS;  COUNTERPARTS.  This
Agreement,  including  the  Schedules  hereto,  all of which are a part  hereof,
contains  the entire  understanding  of the parties  hereto with  respect to the
subject matter  contained  herein and therein, 


                                       11


<PAGE>


supersedes and cancels all prior  agreements  with respect hereto or thereto and
may be amended  only by a written  instrument  executed  by the parties or their
respective  successors  or  assigns.   There  are  no  restrictions,   promises,
representations, warranties, agreements or undertakings of any party hereto with
respect  to the  transactions  under this  Agreement  other than those set forth
herein or made hereunder in the documents delivered at each Closing. The section
and  paragraph  headings  contained in this  Agreement  and the  description  of
exhibits attached hereto are for reference purposes only and shall not affect in
any way the meaning or interpretation  of this Agreement.  This Agreement may be
executed in one or more  counterparts and each counterpart shall be deemed to be
an original.

     SECTION 14. PARTIES IN INTEREST. Except with the express written consent of
the other parties  hereto,  this Agreement  shall not be assignable or otherwise
transferred in whole or in part.  This  Agreement  shall inure to the benefit of
and be binding upon the parties and their respective successors. Nothing in this
Agreement,  express or implied,  is intended to confer upon any other person any
rights or remedies under or by reason of this Agreement.

     SECTION 15.  SEVERABILITY.  The  invalidity of any portion hereof shall not
affect the validity, force or effect of the remaining portions hereof.

     SECTION 16. FURTHER  ASSURANCES.  Sellers and Purchasers  shall execute and
deliver or cause to be executed and delivered such additional  instruments,  and
take such other actions as the other party may reasonably  request in writing in
order to effectuate the purposes of this Agreement.

                    [Remainder of Page Intentionally Blank]


                                       12


<PAGE>


 [Counterpart Signature Page to Purchase Agreement of dated December 18, 1997]


         IN  WITNESS  WHEREOF,  the  parties  hereto  have  duly  executed  this
Agreement as of the date first above written.

                                    PURCHASERS:


                                                Robert E. Wolfe
                                        -------------------------------
                                                 [print name]


ATTEST:                             By: /s/ Robert E. Wolfe
                                        -------------------------------
                                    Name:  Robert E. Wolfe
                                    Title: Individual

Angela Nevarez
- -----------------------
       Witness

                                         Address for Notices:

                                         Robert E. Wolfe
                                         476 Main Street
                                         Maybrook, NY  12543


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


                                    SELLERS:


                                         -------------------------------
                                                  [print name]


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


                                    Address for Notices:


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


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

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


                                       13


<PAGE>

 [Counterpart Signature Page to Purchase Agreement of dated December 18, 1997]


         IN  WITNESS  WHEREOF,  the  parties  hereto  have  duly  executed  this
Agreement as of the date first above written.

                                    PURCHASERS:


                                            CROSSLAND LTD. (BELIZE)
                                        -------------------------------
                                                 [print name]


ATTEST:                             By: /s/ Anthony J.R. Howorth
                                        -------------------------------
Bahamas Company Services Ltd.       Name:    Anthony J.R. Howorth
                                    Title:   President

Pauline Cox
- -----------------------
       Secretary

                                         Address for Notices:

                                         Crossland, Ltd. (Belize)
                                         60 Market Square
                                         P.O. Box 364
                                         Belize City, Belize, Central America


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


                                    SELLERS:


                                         -------------------------------
                                                  [print name]


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


                                    Address for Notices:


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


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


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


                                       13


<PAGE>


 [Counterpart Signature Page to Purchase Agreement of dated December 18, 1997]


         IN  WITNESS  WHEREOF,  the  parties  hereto  have  duly  executed  this
Agreement as of the date first above written.

                                    PURCHASERS:



                                        Triton International Ltd.
                                        -------------------------------
                                                  [print name]


ATTEST:                             By: /s/ Jens S. Olsen
                                        -------------------------------
                                    Name:   Jens S. Olsen
                                    Title:

Illegible
- -----------------------
       Secretary

                                         Address for Notices:

                                         Triton International, Ltd.
                                         Euro-Canadian House
                                         Marlboro Street
                                         Nassau, Bahamas


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


                                    SELLERS:


                                         -------------------------------
                                                  [print name]


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


                                    Address for Notices:


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


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


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


                                       13


<PAGE>



 [Counterpart Signature Page to Purchase Agreement of dated December 18, 1997]


         IN  WITNESS  WHEREOF,  the  parties  hereto  have  duly  executed  this
Agreement as of the date first above written.

                                    PURCHASERS:



                                        -------------------------------
                                                  [print name]


ATTEST:                             By: 
                                        -------------------------------
                                    Name:
                                    Title:


- -----------------------
       Witness

                                         Address for Notices:

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

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

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


                                    SELLERS:


                                         Edelson Technology Partners II, L.P.
                                         ------------------------------------
                                                     [print name]


                                          /s/ Harry Edelson
                                          -----------------------------------
                                          Harry Edelson, General Partner


                                    Address for Notices:

                                         300 Tice Boulevard
                                         Woodcliff Lake, NJ  07675


                                       13


<PAGE>


                                   Schedule 1

                                   Purchasers


Name                                         $ Amount            # of Shares
- ----                                         --------            -----------

Robert E. Wolfe                              $  625.00              50,000
476 Main Street
Maybrook, NY  12543

Trion International, Ltd.                    $4,687.50             375,000
Euro-Canadian House
Marlboro Street
Nassau, Bahamas

Crossland, Ltd. (Belize)                     $4,687.50             375,000
60 Market Square
P.O. Box 364
Belize City, Belize, Central America



<PAGE>


                                   Schedule 2

                                    Sellers


Name                                         $ Amount            # of Shares
- ----                                         --------            -----------

Edelson Technology Partners II, L.P.         $10,000                800,000
300 Tice Boulevard
Woodcliff Lake, NJ
Telecopier:  (201) 930-8899



<PAGE>


                                 Schedule 3(s)

                        Compliance with Laws (Purchaser)


Purchaser  has not held an  annual  meeting  since  October,  1993.  Purchaser's
qualification to transact business in California has not been maintained.



<PAGE>


                                 Schedule 4(a)

                           Subsidiaries of Purchasers



                                      NONE



<PAGE>


                                 Schedule 3(o)



Directors:

     Harry Edelson
     Emile A. Battat
     Richard O. Jacobson
     Albert James

Officers:

     Harry Edelson                 Chairman of the Board and
                                   Chief Executive Officer, President, Chief
                                   Financial Officer and Director

Banks:

     None


<PAGE>


                                 Schedule 3(m)

                               Contracts of AOXY



In August  1995 in order to retain  senior  management,  AOXY  agreed to pay Mr.
Kopetz,  Ms.  Castle  and David  Overmyer,  AOXY's  controller,  a bonus if AOXY
successfully  completed a sale of AOXY or its  technology  by May 31, 1995.  The
bonus would equal 5% of the first million dollars of the gross proceeds from the
Patent Sale, 4% of the next million  dollars of such gross  proceeds,  3% of the
third million,  2% of the fourth million and 1% of all amounts received from the
Patent  Sale over 4 million.  This bonus is shared  equally by Mr.  Kopetz,  Ms.
Castle and Mr.  Overmyer.  Upon the closing,  they  received,  in the  aggregate
$16,750.00 or $5,583.33  each. As no other  royalties have been received to date
from W.R.  Grace,  no additional  sums have been paid. All such bonus is payable
only from the Grace Royalty. At closing, the above mentioned liabilities of AOXY
shall have been  assigned  to and  assumed  by AOXY  Liquidation  Inc.  with the
consent of the creditors.



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