Patent US2637259A successfully refreshed from Google Patents.
US2637259A
Expired / Lapsed
US
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Tractor power lift with rock-shaft and synchronized remote cylinder
Assignee: Individual
•
Filing: 1948-04-23
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Granted: 1953-05-05
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Expires: 1968-04-23
Abstract
No abstract record available.
Inventors
- 👤 Russel D Acton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:47
CPC Classifications
A; A01; A01B; A01B63/00; A01B63/14; A01B63/16; A01B63/22; E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/80; E02F3/84; E02F3/844
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2410918A
Cited
US2072111A
Cited
US2160596A
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US2276979A
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US2346857A
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US2292961A
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US2354274A
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US2361326A
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US2409510A
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US2368659A
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US2368125A
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US2436155A
Cited
US2386378A
Cited
US2485651A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-04 | 1956-11-03 | 1957-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-04 | 1960-11-03 | 1961-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-04 | 1964-11-03 | 1965-05-05 | $7700.00 | Window Closed / Lapsed |