US2608281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control apparatus
Assignee: Westinghouse Air Brake Co
•
Filing: 1946-06-28
•
Granted: 1952-08-26
•
Expires: 1966-06-28
Abstract
No abstract record available.
Inventors
- 👤 Ellis E Hewitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:37
CPC Classifications
B; B60; B60L; B60L50/00; B60L50/10; B60L2200/00; B60L2200/26; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/70; Y02T10/7072; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2249955A
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US2426064A
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US2366020A
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US2406264A
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US2386391A
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US2433916A
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US2413390A
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US2480521A
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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) | 1955-08-26 | 1956-02-25 | 1956-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-26 | 1960-02-25 | 1960-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-26 | 1964-02-25 | 1964-08-26 | $7700.00 | Window Closed / Lapsed |