US2914614A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control and testing means for carrier signaling and communication equipments
Assignee: Westinghouse Air Brake Co
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Filing: 1955-09-13
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Granted: 1959-11-24
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Expires: 1975-09-13
Abstract
No abstract record available.
Inventors
- 👤 Ralph K Crooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:26
CPC Classifications
H; H04; H04B; H04B3/00; H04B3/54; H04B3/544; B; B61; B61L; B61L3/00; B61L3/02; B61L3/08; B61L3/10; H04B1/00; H04B1/38; H04B1/40; H04B1/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |