Patent US3616639A successfully refreshed from Google Patents.
US3616639A
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US
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Pulse generator
Assignee: Federal Mogul Engineering Ltd
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Filing: 1968-10-24
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Granted: 1971-11-02
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Expires: 1988-10-24
Abstract
Abstract THIS INVENTION IS A METHOD OF ACCURATELY TIMING CONTROL PULSES FOR A CLOCK MECHANISM USING A PENDULUM. THE NEAREST PRIOR ART KNOW IS AN EXTRACT FROM A BOOK "HORLODGES A BALANCIER PEDULAIRE" PAGES 67 AND 68, A COPY OF WHICH IS ATTACHED.
Inventors
- 👤 William R Boyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:54
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/60; H03K17/64; G; G04; G04C; G04C3/00; G04C3/02; G04C3/033
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |