Patent US2660069A successfully refreshed from Google Patents.
US2660069A
Expired / Lapsed
US
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Variable speed transmission
Assignee: COCKSHUTT FARM EQUIPMENT Ltd
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Filing: 1950-02-24
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Granted: 1953-11-24
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Expires: 1970-02-24
Abstract
No abstract record available.
Inventors
- 👤 Donald S Horne
- 👤 James W Macdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:13
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/66; F16H61/662
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB190708451A
Cited
US942065A
Cited
US1035860A
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US1053918A
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US2130995A
Cited
US2346868A
Cited
US2210976A
Cited
FR898174A
Cited
US2529489A
Cited
US2496061A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |