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US2611074A
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Centralized traffic control system for the code control of interlocked switches and signals
Assignee: Westinghouse Air Brake Co
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Filing: 1947-06-02
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Granted: 1952-09-16
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Expires: 1967-06-02
Abstract
No abstract record available.
Inventors
- 👤 Frank T Pascoe
- 👤 Arthur L Jerome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:07
CPC Classifications
B; B61; B61L; B61L19/00; B61L19/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2229249A
Cited
US2183155A
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US2141074A
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US2315034A
Cited
US2344573A
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US2343784A
Cited
US2410504A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-16 | 1956-03-17 | 1956-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-16 | 1960-03-17 | 1960-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-16 | 1964-03-17 | 1964-09-16 | $7700.00 | Window Closed / Lapsed |