US2770979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Change-speed gearing
Assignee: Individual
•
Filing: 1954-01-22
•
Granted: 1956-11-20
•
Expires: 1974-01-22
Abstract
No abstract record available.
Inventors
- 👤 Sinclair Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:50
CPC Classifications
F; F16; F16D; F16D23/00; F16D23/02; F16D23/10; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19251; Y10T74/19256; Y10T74/19274; Y10T74/19284
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2202271A
Cited
US2224322A
Cited
US2459361A
Cited
US2515114A
Cited
US2505842A
Cited
US2507640A
Cited
US2559740A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-20 | 1960-05-21 | 1960-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-20 | 1964-05-21 | 1964-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-20 | 1968-05-21 | 1968-11-20 | $7700.00 | Window Closed / Lapsed |