Patent US2658595A successfully refreshed from Google Patents.
US2658595A
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US
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Variable speed hydraulic clutch
Assignee: THOMAS HYDRAULIC SPEED CONTROL
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Filing: 1950-05-25
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Granted: 1953-11-10
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Expires: 1970-05-25
Abstract
No abstract record available.
Inventors
- 👤 John R Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:56
CPC Classifications
F; F16; F16D; F16D31/00; F16D31/08; F16D31/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE22577E
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US956860A
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US1014501A
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US1064565A
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US2498801A
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US2526914A
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US2531014A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |