US3341841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Fabrique D'horlogerie De Fontainemelon SA
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Filing: 1965-07-26
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Granted: 1967-09-12
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Expires: 1985-07-26
Abstract
No abstract record available.
Inventors
- 👤 Stampfli Jean-Marcel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:11
CPC Classifications
G; G04; G04C; G04C21/00; G04C21/16; G04C21/28; G04C21/30; G08; G08B; G08B3/00; G08B3/10; H; H03; H03B; H03B5/00; H03B5/30; H03B5/32; H03B5/36; H03B5/362
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
AN ELECTRIC BUZZER FOR TIME-KEEPING INSTRUMENTS, PARTICULARLY ALARM CLOCKS AND THE LIKE, COMPRISING AN ELECTRONIC OSCILLATOR AND AN ELECTRO-ACOUSTICAL TRANSDUCER ENERGIZED BY SAID OSCILLATOR, A FEED-BACK TRANSFORMER IN SAID OSCILLATOR, SAID FEED-BACK TRANSFORMER HAVING A PRIMARY AND SECONDARY FEED-BACK WINDING SERIES-CONNECTED IN THE SAME SENSE OF WINDING IN THE CIRCUIT OF SAID ELECTRO-
Claim 2
Dependent Claim
53 words
AN ELECTRIC BUZZER FOR TIME-KEEPING INSTRUMENTS, PARTICULARLY ALARM CLOCKS AND THE LIKE, COMPRISING AN ELECTRONIC OSCILLATOR AND AN ELECTRO-ACOUSTICAL TRANSDUCER ENERGIZED BY SAID OSCILLATOR, A FEED-BACK TRANSFORMER IN SAID OSCILLATOR, SAID FEED-BACK TRANSFORMER HAVING A PRIMARY AND SECONDARY FEED-BACK WINDING SERIES-CONNECTED IN THE SAME SENSE OF WINDING IN THE CIRCUIT OF SAID ELECTRO-
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 |