US2687048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal fluid pressure variable combined hydrodynamical and planetary gearing driven transmission coupler applicable to a traction wheel of an automotive vehicle
Assignee: Individual
•
Filing: 1952-09-08
•
Granted: 1954-08-24
•
Expires: 1972-09-08
Abstract
No abstract record available.
Inventors
- 👤 Butler Frank David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:45
CPC Classifications
F; F16; F16H; F16H47/00; F16H47/06; F16H47/08; B; B62; B62M; B62M25/00; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19009
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US971166A
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US1430676A
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DE479119C
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US2166961A
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US2301242A
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US2335549A
Cited
US2287498A
Cited
US2380734A
Cited
US2544551A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |