US2576038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centralized traffic control system for the code control of interlocked switches and signals
Assignee: Westinghouse Air Brake Co
•
Filing: 1946-11-09
•
Granted: 1951-11-20
•
Expires: 1966-11-09
Abstract
No abstract record available.
Inventors
- 👤 Frank T Pascoe
- 👤 Arthur L Jerome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:03
CPC Classifications
B; B61; B61L; B61L7/00; B61L7/06; B61L7/08; B61L7/088
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2229249A
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US2265240A
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US2141074A
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US2302038A
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US2343784A
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US2331262A
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US2420579A
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US2404303A
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US2411387A
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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) | 1954-11-19 | 1955-05-21 | 1955-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-19 | 1959-05-21 | 1959-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-19 | 1963-05-21 | 1963-11-20 | $7700.00 | Window Closed / Lapsed |