US2546023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Locomotive control system
Assignee: Westinghouse Electric Corp
•
Filing: 1949-03-01
•
Granted: 1951-03-20
•
Expires: 1969-03-01
Abstract
No abstract record available.
Inventors
- 👤 John J Stamm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:37
CPC Classifications
B; B60; B60L; B60L50/00; B60L50/10; B60L50/11; B60L2200/00; B60L2200/26; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1806705A
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US1280587A
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US1745130A
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FR714683A
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US2050068A
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GB456119A
Cited
US2281987A
Cited
US2311285A
Cited
US2340994A
Cited
US2393621A
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US2472924A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-19 | 1954-09-18 | 1955-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-19 | 1958-09-18 | 1959-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-19 | 1962-09-18 | 1963-03-20 | $7700.00 | Window Closed / Lapsed |