Patent US3489256A successfully refreshed from Google Patents.
US3489256A
Expired / Lapsed
US
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Clutch assembly for an automotive vehicle
Assignee: ZF Friedrichshafen AG
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Filing: 1968-03-04
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Granted: 1970-01-13
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Expires: 1988-03-04
Abstract
No abstract record available.
Inventors
- 👤 Richard Binder
- 👤 Kurt Fadler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:01
CPC Classifications
F; F16; F16D; F16D13/00; F16D13/58; F16D13/70; F16D13/71; F16D13/22; F16D13/38; F16D13/46; F16D13/48; F16D13/50; F16D23/00; F16D23/12; F16D23/14; F16D2013/706
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |