US2961640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic radio-transmitted brake application and release signalling apparatus for railway trains
Assignee: Westinghouse Air Brake Co
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Filing: 1958-06-16
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Granted: 1960-11-22
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Expires: 1978-06-16
Abstract
No abstract record available.
Inventors
- 👤 Behren Edward E Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:52
CPC Classifications
B; B61; B61L; B61L15/00; B61L15/0018; B61L15/0027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |