US2881891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Driving clutch mechanism
Assignee: Primerica Inc
•
Filing: 1956-01-20
•
Granted: 1959-04-14
•
Expires: 1976-01-20
Abstract
No abstract record available.
Inventors
- 👤 Birkland Stellan
- 👤 Roger B Neuberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:56
CPC Classifications
F; F16; F16D; F16D48/00; F16D48/06; F16D48/064; F16D2500/00; F16D2500/10; F16D2500/102; F16D2500/1021; F16D2500/1022; F16D2500/50; F16D2500/502; F16D2500/50287; F16D2500/51; F16D2500/5102; F16D2500/70; F16D2500/704; F16D2500/70402; F16D2500/7041; F16D2500/70418; F16D2500/70422; F16D2500/70438; F16D2500/7044
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1515774A
Cited
US1155124A
Cited
US1491426A
Cited
US1938720A
Cited
US2068260A
Cited
DE892405C
Cited
US2497893A
Cited
US2687197A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |