Patent US2777550A successfully refreshed from Google Patents.
US2777550A
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Fluid coupling with electromagnetic clutch
Assignee: Daimler Benz AG
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Filing: 1950-10-26
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Granted: 1957-01-15
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Expires: 1970-10-26
Abstract
No abstract record available.
Inventors
- 👤 Hans Joachim M Forster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:59
CPC Classifications
F; F16; F16D; F16D47/00; F16D47/06; F16D27/00; F16D27/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE599765C
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US2184606A
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US2120734A
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US2332593A
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US2302714A
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US2320116A
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US2334394A
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US2642168A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-15 | 1960-07-16 | 1961-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-15 | 1964-07-16 | 1965-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-15 | 1968-07-16 | 1969-01-15 | $7700.00 | Window Closed / Lapsed |