Patent US2929271A successfully refreshed from Google Patents.
US2929271A
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Six speed planetary transmission
Assignee: Doosan Bobcat North America Inc
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Filing: 1957-05-23
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Granted: 1960-03-22
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Expires: 1977-05-23
Abstract
No abstract record available.
Inventors
- 👤 James A Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:09
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/44; F16H3/62; F16H3/66; F16H3/663; F16H2200/00; F16H2200/003; F16H2200/0052; F16H2200/20; F16H2200/2002; F16H2200/201; F16H2200/202; F16H2200/2023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2144270A
Cited
US2371371A
Cited
GB602497A
Cited
US2592537A
Cited
US2606459A
Cited
US2749767A
Cited
US2873626A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-22 | 1963-09-21 | 1964-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-22 | 1967-09-21 | 1968-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-22 | 1971-09-21 | 1972-03-22 | $7700.00 | Window Closed / Lapsed |