US2482301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control apparatus for reversible internal-combustion engines
Assignee: Westinghouse Air Brake Co
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Filing: 1945-06-29
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Granted: 1949-09-20
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Expires: 1965-06-29
Abstract
No abstract record available.
Inventors
- 👤 Roy R Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:17
CPC Classifications
F; F01; F01L; F01L13/00; F01L2760/00; F01L2760/002; Y; Y10; Y10S; Y10S74/00; Y10S74/08; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18088; Y10T74/18096; Y10T74/18856; Y10T74/18888
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2444273A
Cited
US2413390A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-19 | 1953-03-21 | 1953-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-19 | 1957-03-21 | 1957-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-19 | 1961-03-21 | 1961-09-20 | $7700.00 | Window Closed / Lapsed |