Patent US2158440A successfully refreshed from Google Patents.
US2158440A
Expired / Lapsed
US
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Friction clutch mechanism
Assignee: W C LIPE Inc
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Filing: 1936-07-31
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Granted: 1939-05-16
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Expires: 1956-07-31
Abstract
No abstract record available.
Inventors
- 👤 Charles B Spase
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:44
CPC Classifications
F; F16; F16D; F16D48/00; F16D48/02; F16D13/00; F16D13/58; F16D13/70; F16D13/71; F16D23/00; F16D23/12; F16D23/14; F16D23/148; F16D25/00; F16D25/12; F16D25/14; F16D2048/0212; F16D2048/0221; Y; Y10; Y10S; Y10S82/00; Y10S82/905
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) | 1942-05-15 | 1942-11-14 | 1943-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-05-15 | 1946-11-14 | 1947-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-05-15 | 1950-11-14 | 1951-05-16 | $7700.00 | Window Closed / Lapsed |