Patent US3256967A successfully refreshed from Google Patents.
US3256967A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet metal clutch disc and hub
Assignee: ZF Friedrichshafen AG
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Filing: 1964-03-30
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Granted: 1966-06-21
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Expires: 1984-03-30
Abstract
No abstract record available.
Inventors
- 👤 Heid Roland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:39
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/06; F16D1/064; F16D1/072; F16D1/10; F16D1/101; F16D13/00; F16D13/58; F16D13/60; F16D13/64; F16D13/644; F16D13/68; F16D2001/103; F16D2250/00; F16D2250/0023; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49481
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US860590A
Cited
US1493237A
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US1515284A
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US1479974A
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US3058204A
Cited
US2916123A
Cited
US2927674A
Cited
US3080644A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |