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Patent US2480160A successfully refreshed from Google Patents.
US2480160A
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Signaling system
Assignee: STC PLC
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Filing: 1945-06-27
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Granted: 1949-08-30
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Expires: 1965-06-27
Abstract
No abstract record available.
Inventors
- 👤 Michel C Poylo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:52
CPC Classifications
B; B61; B61L; B61L3/00; B61L3/02; B61L3/08; B61L3/12; B61L3/125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US253442A
Cited
US1072474A
Cited
US1747011A
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US1993497A
Cited
US2089639A
Cited
US2311021A
Cited
US2363416A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-29 | 1953-02-28 | 1953-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-29 | 1957-02-28 | 1957-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-29 | 1961-02-28 | 1961-08-30 | $7700.00 | Window Closed / Lapsed |