UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(AMENDMENT NO. _____________) *
Detection Systems, Inc.
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(Name of Issuer)
COM
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(Title of Class of Securities)
250644 10 1
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CUSIP Number
December 31, 1999
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(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this
Schedule is filed.
[x] Rule 13d-1(b)
[_] Rule 13d-1(c)
[_] Rule 13d-1(d)
*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 the
disclosures provided in a prior cover page.
The information required in 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).
POTENTIAL PERSONS WHO ARE TO RESPOND TO THE COLLECTION OF INFORMATION CONTAINED
IN THIS FORM ARE NOT REQUIRED TO RESPOND UNLESS THE FORM DISPLAYS A CURRENTLY
VALID OMB CONTROL NUMBER.
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CUSIP No. 250644 10 1
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John G. Ullman & Associates, Inc.
1. NAMES OF REPORTING PERSONS. USGM Securities, Inc.
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY).
16-1113141; 16-1276734
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2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
(A) X
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(B) ------------------------------------------------------------------------
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3. SEC USE ONLY
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4. CITIZENSHIP OR PLACE OF ORGANIZATION New York
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NUMBER OF 5. SOLE VOTING POWER 0,0
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SHARES BENE-
FICIALLY 6. SHARED VOTING POWER 0,0
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OWNED BY EACH
REPORTING 7. SOLE DISPOSITIVE POWER 344,371; 13,085
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PERSON WITH: 8. SHARED DISPOSITIVE POWER 0,0
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9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 344,371 13,085
10. CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES
(SEE iNSTRUCTIONS)
11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 5.66 (for the group)
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12. TYPE OF REPORTING PERSON (See Instructions) IA: BD
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