Patent US3775576A successfully refreshed from Google Patents.
Patent US2271252A successfully refreshed from Google Patents.
US2271252A
Expired / Lapsed
US
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Drum clutch
Assignee: CARDWELL Mfg CO Inc
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Filing: 1940-07-27
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Granted: 1942-01-27
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Expires: 1960-07-27
Abstract
No abstract record available.
Inventors
- 👤 Harland W Cardwell
- 👤 Gerald G Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:07
CPC Classifications
F; F16; F16D; F16D11/00; F16D11/08; F16D11/10; B; B66; B66D; B66D1/00; B66D1/02; B66D1/14; B66D1/16
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) | 1945-01-26 | 1945-07-28 | 1946-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-01-26 | 1949-07-28 | 1950-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-01-26 | 1953-07-28 | 1954-01-27 | $7700.00 | Window Closed / Lapsed |