US2589830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch and brake for motor drives
Assignee: Individual
•
Filing: 1946-06-25
•
Granted: 1952-03-18
•
Expires: 1966-06-25
Abstract
No abstract record available.
Inventors
- 👤 William H Lewin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:38
CPC Classifications
F; F16; F16D; F16D67/00; F16D67/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1042090A
Cited
US1382133A
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US1544080A
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US1756576A
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US1879546A
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FR761185A
Cited
US2037644A
Cited
US2274457A
Cited
US2269788A
Cited
US2250981A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |