Patent US957872A successfully refreshed from Google Patents.
Patent US2760612A successfully refreshed from Google Patents.
US2760612A
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Clutch control apparatus
Assignee: Westinghouse Air Brake Co
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Filing: 1953-09-30
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Granted: 1956-08-28
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Expires: 1973-09-30
Abstract
No abstract record available.
Inventors
- 👤 Ralph C Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:38
CPC Classifications
B; B63; B63H; B63H23/00; B63H23/30; F; F15; F15B; F15B11/00; F15B11/16; F15B2211/00; F15B2211/30; F15B2211/305; F15B2211/3052; F15B2211/3056; F15B2211/3059; F15B2211/50; F15B2211/505; F15B2211/50554; F15B2211/515; F15B2211/5151; F15B2211/70; F15B2211/705; F15B2211/7058; F15B2211/71; F15B2211/76; F15B2211/78; F15B2211/782
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2283133A
Cited
US2428457A
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US2482300A
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US2518781A
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US2464986A
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US2559740A
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US2627168A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-28 | 1960-02-27 | 1960-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-28 | 1964-02-27 | 1964-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-28 | 1968-02-27 | 1968-08-28 | $7700.00 | Window Closed / Lapsed |