Patent US1137944A successfully refreshed from Google Patents.
US1137944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction-clutch.
Assignee: Individual
•
Filing: 1912-02-08
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Granted: 1915-05-04
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Expires: 1932-02-08
Abstract
No abstract record available.
Inventors
- 👤 Charles M Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:57
CPC Classifications
F; F16; F16D; F16D25/00; F16D25/04; F16D25/042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1918-05-03 | 1918-11-02 | 1919-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1922-05-03 | 1922-11-02 | 1923-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1926-05-03 | 1926-11-02 | 1927-05-04 | $7700.00 | Window Closed / Lapsed |