US3040589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable speed power transmissions
Assignee: F Perkins Ltd
•
Filing: 1959-01-19
•
Granted: 1962-06-26
•
Expires: 1979-01-19
Abstract
No abstract record available.
Inventors
- 👤 Chapman Charles Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:22
CPC Classifications
F; F16; F16H; F16H47/00; F16H47/06; F16H47/08; F16H47/085; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19019
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2128413A
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US2292482A
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US2368684A
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US2467077A
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US2505713A
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US2499128A
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US2497338A
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US2588220A
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US2707408A
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US2884806A
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US2959070A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-25 | 1965-12-25 | 1966-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-25 | 1969-12-25 | 1970-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-25 | 1973-12-25 | 1974-06-26 | $7700.00 | Window Closed / Lapsed |