Patent US3341810A successfully refreshed from Google Patents.
US3341810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gunshot detector system
Assignee: Melpar Inc
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Filing: 1965-04-27
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Granted: 1967-09-12
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Expires: 1985-04-27
Abstract
No abstract record available.
Inventors
- 👤 Jr James Wallen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:09
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/001; G01S; G01S11/00; G01S11/02; G01S11/06; Y; Y10; Y10S; Y10S367/00; Y10S367/901; Y10S367/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A SYSTEM FOR DETECTING THE RANGE OF A WAVE SOURCE DERIVING APPROXIMATELY EQUAL AMPLITUDES I0, AT TWO DIFFERENT FREQUENCIES F1 AND F2, WHEREIN WAVES FROM SAID SOURCE AT FREQUENCIES F1 AND F2 ARE ATTENUATED AS THEY PROPAGATE THROUGH A MEDIUM IN ACCORDANCE WITH:
Claim 2
Independent Claim
43 words
A SYSTEM FOR DETECTING THE RANGE OF A WAVE SOURCE DERIVING APPROXIMATELY EQUAL AMPLITUDES I0, AT TWO DIFFERENT FREQUENCIES F1 AND F2, WHEREIN WAVES FROM SAID SOURCE AT FREQUENCIES F1 AND F2 ARE ATTENUATED AS THEY PROPAGATE THROUGH A MEDIUM IN ACCORDANCE WITH:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |