Patent US2661086A successfully refreshed from Google Patents.
US2661086A
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Friction clutch with lever fulcrum ring assembly
Assignee: Lipe Rollway Corp
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Filing: 1950-06-16
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Granted: 1953-12-01
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Expires: 1970-06-16
Abstract
No abstract record available.
Inventors
- 👤 Charles B Spase
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:36
CPC Classifications
F; F16; F16D; F16D13/00; F16D13/58; F16D13/70; F16D13/71
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1131769A
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US1489423A
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US1886294A
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US1923438A
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US1942691A
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US2064450A
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US2171829A
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US2117482A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |