Patent US2660073A successfully refreshed from Google Patents.
US2660073A
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Progressive change-speed gear
Assignee: Individual
•
Filing: 1951-01-12
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Granted: 1953-11-24
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Expires: 1971-01-12
Abstract
No abstract record available.
Inventors
- 👤 Patin Pierre Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:14
CPC Classifications
F; F16; F16H; F16H15/00; F16H15/48; F16H15/50; F16H15/52; F16H37/00; F16H37/02; F16H37/06; F16H37/08; F16H37/0833; F16H37/084; F16H37/086
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE410138C
Cited
US766757A
Cited
GB191124140A
Cited
US1800388A
Cited
US1770408A
Cited
US1978439A
Cited
DE551390C
Cited
DE577118C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |