Patent US2718271A successfully refreshed from Google Patents.
US2718271A
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Tractor wherein the speed is selectively changed while in motion
Assignee: International Motors LLC
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Filing: 1953-02-18
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Granted: 1955-09-20
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Expires: 1973-02-18
Abstract
No abstract record available.
Inventors
- 👤 Jedrzykowski Edmund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:22
CPC Classifications
F; F16; F16D; F16D41/00; F16D41/06; F16D41/069; B; B62; B62D; B62D49/00; B62D49/06; Y; Y10; Y10S; Y10S180/00; Y10S180/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2066873A
Cited
US1428221A
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GB351612A
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US2072380A
Cited
US2094131A
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US2292776A
Cited
US2254358A
Cited
US2348763A
Cited
US2555702A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-19 | 1959-03-21 | 1959-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-19 | 1963-03-21 | 1963-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-19 | 1967-03-21 | 1967-09-20 | $7700.00 | Window Closed / Lapsed |