Patent US2874815A successfully refreshed from Google Patents.
US2874815A
Expired / Lapsed
US
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Friction clutch assembly
Assignee: Individual
•
Filing: 1957-07-23
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Granted: 1959-02-24
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Expires: 1977-07-23
Abstract
No abstract record available.
Inventors
- 👤 Hoffman Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:18
CPC Classifications
D; D05; D05B; D05B69/00; D05B69/14; D05B69/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1886035A
Cited
US2068331A
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US2133228A
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US2196891A
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US2187968A
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US2179360A
Cited
US2498392A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |