Patent US2791771A successfully refreshed from Google Patents.
US2791771A
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US
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Fluid operated yieldable shifter for positive clutches
Assignee: Rockwell Spring and Axle Co
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Filing: 1954-02-26
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Granted: 1957-05-07
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Expires: 1974-02-26
Abstract
No abstract record available.
Inventors
- 👤 Carl E Schou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:34
CPC Classifications
F; F16; F16D; F16D29/00; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19377; Y10T74/19414; Y10T74/19419; Y10T74/19423; Y10T74/19428; Y10T74/19433; Y10T74/19437
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE17707E
Cited
US2603327A
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US1345633A
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FR826574A
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US2605749A
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US2641637A
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US2684739A
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US2723735A
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US2718950A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-06 | 1960-11-05 | 1961-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-06 | 1964-11-05 | 1965-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-06 | 1968-11-05 | 1969-05-07 | $7700.00 | Window Closed / Lapsed |