US2589291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid actuated clutch
Assignee: National Machinery Co
•
Filing: 1945-07-16
•
Granted: 1952-03-18
•
Expires: 1965-07-16
Abstract
No abstract record available.
Inventors
- 👤 Robert E Sanford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:18
CPC Classifications
F; F16; F16D; F16D25/00; F16D25/04; F16D25/042; F16D25/044
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US427085A
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US818828A
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US848379A
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US848380A
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US993825A
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US1360394A
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US1465431A
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US1964745A
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US2074738A
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US2138393A
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US2241241A
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 |