US2944647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air cooled clutch-brake
Assignee: Individual
•
Filing: 1957-05-17
•
Granted: 1960-07-12
•
Expires: 1977-05-17
Abstract
No abstract record available.
Inventors
- 👤 Twyman L Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:47
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/78; F16D65/84; F16D65/847; F16D67/00; F16D67/02; F16D67/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2095094A
Cited
FR973180A
Cited
US2454471A
Cited
CH273578A
Cited
US2584190A
Cited
US2674356A
Cited
US2742129A
Cited
US2739251A
Cited
US2818949A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |