US3548981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power shift transmission having synchronized clutch control
Assignee: Twin Disc Inc
•
Filing: 1969-02-25
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Granted: 1970-12-22
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Expires: 1989-02-25
Abstract
No abstract record available.
Inventors
- 👤 Rodney G Hill
- 👤 Peter O Koenig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:34
CPC Classifications
B; B62; B62D; B62D53/00; B62D53/02; B62D53/025; B62D53/026; B60; B60W; B60W30/00; B60W30/18; B60W30/1819; B60K; B60K2702/00; B60K2702/08; B60K2702/10; B60K2702/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |