US2859847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugally engaged friction clutch mechanism
Assignee: Individual
•
Filing: 1954-02-01
•
Granted: 1958-11-11
•
Expires: 1974-02-01
Abstract
No abstract record available.
Inventors
- 👤 Paul C Kuehn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:55
CPC Classifications
F; F16; F16D; F16D43/00; F16D43/02; F16D43/04; F16D43/06; F16D43/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1503818A
Cited
US1670877A
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US1718105A
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US1990614A
Cited
US2107075A
Cited
US2201339A
Cited
US2249281A
Cited
US2491003A
Cited
US2696898A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-10 | 1962-05-12 | 1962-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-10 | 1966-05-12 | 1966-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-10 | 1970-05-12 | 1970-11-11 | $7700.00 | Window Closed / Lapsed |