Patent US2764041A successfully refreshed from Google Patents.
US2764041A
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US
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Auxiliary transmission for tractors
Assignee: Individual
•
Filing: 1953-02-05
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Granted: 1956-09-25
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Expires: 1973-02-05
Abstract
No abstract record available.
Inventors
- 👤 John H Walker
- 👤 Clarence W Crenshaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:03
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/02; F16H3/08; F16H3/14; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19167; Y10T74/19219; Y10T74/19377; Y10T74/19414; Y10T74/19484
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) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |