Patent US2917899A successfully refreshed from Google Patents.
US2917899A
Expired / Lapsed
US
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Hydrodynamic coupling, especially for motor vehicles
Assignee: Daimler Benz AG
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Filing: 1953-11-30
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Granted: 1959-12-22
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Expires: 1973-11-30
Abstract
No abstract record available.
Inventors
- 👤 Karl A Kollmann
- 👤 Eltze Ulrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:39
CPC Classifications
F; F16; F16D; F16D33/00; F16D33/06; F16D33/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1389562A
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US2014944A
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US2287374A
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US2256878A
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US2534517A
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US2508442A
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US2569087A
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US2651919A
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US2693677A
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US2673450A
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US2625014A
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US2689458A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-21 | 1963-06-22 | 1963-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-21 | 1967-06-22 | 1967-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-21 | 1971-06-22 | 1971-12-22 | $7700.00 | Window Closed / Lapsed |