US2770775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wayside vehicle speed determining means
Assignee: Westinghouse Air Brake Co
•
Filing: 1951-12-21
•
Granted: 1956-11-13
•
Expires: 1971-12-21
Abstract
No abstract record available.
Inventors
- 👤 Edward J Agnew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:28
CPC Classifications
B; B61; B61K; B61K7/00; B61K7/02; B61K7/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1328865A
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US1492301A
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US2105930A
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US2251973A
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US2361466A
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US2408711A
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US2513340A
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US2442765A
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US2488815A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-13 | 1960-05-14 | 1960-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-13 | 1964-05-14 | 1964-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-13 | 1968-05-14 | 1968-11-13 | $7700.00 | Window Closed / Lapsed |