<PAGE>
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13D
Under the Securities Exchange Act of 1934
(Amendment No. 6)*
Oxboro Medical, Inc.
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(Name of Issuer)
Common Stock, $0.01 par value
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(Title of Class of Securities)
691384 20 0
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(CUSIP Number)
Girard P. Miller, Esq.
Lindquist & Vennum P.L.L.P.
4200 IDS Center
80 South Eighth Street
Minneapolis, Minnesota 55402
Telephone: (612) 371-2467
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(Name, Address and Telephone Number of Person Authorized
to Receive Notices and Communications)
April 14, 20, 25, 26, and 27 and May 1, 2000
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(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 Sections 240.13d-1(e), 240.13d-1(f) or
240.13d-1(g), check the following box / /.
NOTE: Schedules filed in paper format shall include a signed original and
five copies of the schedule, including all exhibits. See Rule 13d-7 for other
parties to whom copies are to be sent.
*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).
(Continued on following page(s))
Page 1 of 5 Pages
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CUSIP No. 691384 20 0 13D
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(1) Names of Reporting Persons. S.S. or I.R.S. Identification Nos. of Above
Persons
CMM Properties, LLC c/o Gary W. Copperud
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(2) Check the Appropriate Box if a Member (a) / /
of a Group* (b) /X/
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(3) SEC Use Only
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(4) Source of Funds(See instructions) 00 (Cash Reserves)
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(5) Check if Disclosure of Legal Proceedings is Required Pursuant to
Items 2(d) or 2(e) / /
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(6) Citizenship or Place of Organization
CMM Properties, LLC is a Limited Liability Company organized under the
laws of the State of Colorado
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Number of Shares (7) Sole Voting
Beneficially Owned Power 473,402
by Each Reporting --------------------------------------------------
Person With (8) Shared Voting
Power -0-
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(9) Sole Dispositive
Power 473,402
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(10) Shared Dispositive
Power -0-
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(11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
473,402
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(12) CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
SHARES (See instructions)
/ /
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(13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) - According to its
transfer agent, the Issuer had 1,348,766 shares of Common Stock outstanding
at May 5, 2000. Assuming this number of shares outstanding as of the date of
the events which require the filing of this Amendment, the amount at Line 11
above represents 32.0% of the Issuer's outstanding shares. The amount on
Line 11 includes recent purchases of an aggregate 24,117 shares of Common
Stock at an average purchase price of $4.87 per share. The total number of
shares has been reduced by 1,061 shares from the previous filing to reflect a
correction in the aggregate number of shares held by the Reporting Person.
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(14) TYPE OF REPORTING PERSON (See instructions)
00 (Limited Liability Company)
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Page 2 of 5 Pages
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CUSIP No. 691384 20 0
ITEM 1. SECURITY AND ISSUER
(a) Title of Class of Securities: Common Stock, $.01 par value (the
"Common Stock") and one-year Warrants immediately exercisable for purchase of
Common Stock (the "Warrants")
(b) Name of Issuer: Oxboro Medical, Inc.
(c) Address of Issuer's Principal Executive Offices: 13828 Lincoln
Street, N.E., Ham Lake, MN 55304
ITEM 2. IDENTITY AND BACKGROUND
(a) Name of Person Filing: CMM Properties, LLC (the "Reporting
Person") c/o Gary W. Copperud
(b) Business Address: c/o Peak to Peak Financial, 1730 South College
Avenue, Box 20, Fort Collins, CO 80525
(c) Principal Occupation or Employment: Investments
(d) Conviction in a criminal proceeding during the last five years:
No
(e) Subject, during the last five years, to a judgment, decree or final
order enjoining securities laws violations: No
(f) Cititzenship: CMM Properties, LLC is a Colorado Limited
Liability Company.
ITEM 3. SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION
Cash reserves.
ITEM 4. PURPOSE OF TRANSACTION
As reported in Item 5(c) below, the Reporting Person acquired an
aggregate 24,117 shares of Common Stock between April 14, 2000 and May
1, 2000. The acquisitions were made by the Reporting Person in open market
purchases for investment purposes.
ITEM 5. INTEREST IN SECURITIES OF ISSUER
(a) Number and Percentage of Class beneficially owned:
Between April 14, 2000 and May 1, 2000, the Reporting Person
purchased an aggregate 24,117 shares of Common Stock of the Issuer. The 24,117
securities may be deemed beneficially owned within the meaning of Rule 13d-3
of the Securities Exchange Act of
Page 3 of 5 Pages
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1934 by the Reporting Person. As a result of these acquisitions, the
Reporting Person holds an aggregate 473,402 securities of the Issuer,
including 343,523 shares of Common Stock and 129,879 immediately exercisable
warrants for purchase of Common Stock of the Issuer, which represents 32.0%
of the total 1,348,766 shares of the Issuer reported by its transfer agent
as outstanding at May 5, 2000. The total number of shares has been reduced by
1,061 shares from the number shown in the previous filing to reflect a
correction in the aggregate number of shares held by the Reporting Person.
(b) For information on voting and dispositive power with respect to
the above listed shares, see Items 5-8 of the cover page.
(c) Recent Transactions in Securities of the Issuer:
Within the past sixty days, the Reporting Person purchased
shares of Common Stock of the Issuer as set forth below, on dates extending
from April 14, 2000 to May 1, 2000:
<TABLE>
<CAPTION>
No. of Shares Purchase Total
Date Purchased Price per Share Purchase Price
---- ------------- --------------- --------------
<S> <C> <C> <C>
04-14-00 2,900 $4.80 $13,997.93
04-20-00 8,777 4.71 41,573.64
04-25-00 1,000 5.00 5,025.50
04-25-00 6,000 5.02 30,305.30
04-26-00 2,340 5.16 12,131.10
04-27-00 100 5.03 528.62
05-01-00 3,000 4.64 14,000.60
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Total 24,117 $117,562.69
</TABLE>
(d) Ability to Direct the Receipt of Dividends or the Proceeds of
Sale of Securities:
Not applicable.
(e) Last Date on Which Reporting Person Ceased to be a 5% Holder:
Not applicable.
ITEM 6. CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT
TO SECURITIES OF THE ISSUER.
There are no contracts, arrangements, understandings or
relationships (legal or otherwise) among the persons named in Item 2 and
between such persons and any person with respect to any securities of the
Issuer, except that the Reporting Person has an informal, unwritten,
non-binding understanding with Kenneth Brimmer, a shareholder and director of
the Issuer. Such understanding, to date, is to the effect that each will
try (but not necessarily beforehand) to keep the other informed of any
significant purchases or sales which such person makes, and that each will
share, with the other, information concerning the Issuer, and requests for
information addressed to the Issuer, which might affect the valuation of
their respective investments.
Page 4 of 5 Pages
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ITEM 7. MATERIAL TO BE FILED AS EXHIBITS
None.
SIGNATURE
After reasonable inquiry and to the best of its knowledge and belief, the
undersigned certifies that the information set forth in this statement is
true, complete and correct.
Dated: May 9, 2000.
CMM PROPERTIES, LLC
By: /s/ Gary W. Copperud
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Its: Manager
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Page 5 of 5 Pages
