Patent US2774451A successfully refreshed from Google Patents.
US2774451A
Expired / Lapsed
US
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Shiftable clutch in change speed transmission
Assignee: Daimler Benz AG
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Filing: 1950-10-28
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Granted: 1956-12-18
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Expires: 1970-10-28
Abstract
No abstract record available.
Inventors
- 👤 Stump Eugen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:27
CPC Classifications
F; F16; F16D; F16D11/00; F16D11/08; F16D11/10; F16D2011/002; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19242
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB421864A
Cited
US2070140A
Cited
US2053542A
Cited
US2246636A
Cited
US2397620A
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US2615346A
Cited
US2662800A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |