US2747429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal fluid pressure variable, combined hydrodynamic and planetary gearing driven, reversible sun-gear type of transmission coupler
Assignee: Individual
•
Filing: 1951-09-18
•
Granted: 1956-05-29
•
Expires: 1971-09-18
Abstract
No abstract record available.
Inventors
- 👤 Butler Frank David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:26
CPC Classifications
F; F16; F16D; F16D67/00; B; B60; B60K; B60K17/00; B60K17/04; B60K17/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2131619A
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US2143115A
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US2598876A
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US2572310A
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US2687048A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |