Patent US2762464A successfully refreshed from Google Patents.
US2762464A
Expired / Lapsed
US
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Train speed control system
Assignee: SPX Technologies Inc
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Filing: 1954-01-26
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Granted: 1956-09-11
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Expires: 1974-01-26
Abstract
No abstract record available.
Inventors
- 👤 Clinton S Wilcox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:34
CPC Classifications
B; B60; B60L; B60L15/00; B60L15/20; B60L2200/00; B60L2200/26; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/72; Y10; Y10T; Y10T137/00; Y10T137/0971; Y10T137/1044
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2719911A
Cited
US2719912A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-11 | 1960-03-12 | 1960-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-11 | 1964-03-12 | 1964-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-11 | 1968-03-12 | 1968-09-11 | $7700.00 | Window Closed / Lapsed |