Patent US2541018A successfully refreshed from Google Patents.
US2541018A
Expired / Lapsed
US
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Stop-on-signal radio apparatus
Assignee: SIGNAL TUNED RADIO Corp
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Filing: 1946-11-01
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Granted: 1951-02-13
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Expires: 1966-11-01
Abstract
No abstract record available.
Inventors
- 👤 Edward F Andrews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:50
CPC Classifications
H; H03; H03J; H03J7/00; H03J7/18; H03J7/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1624132A
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US1881460A
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US1968302A
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US2112687A
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US2205097A
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US2170694A
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US2260810A
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US2369542A
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US2304871A
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US2303723A
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US2343199A
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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) | 1954-02-12 | 1954-08-14 | 1955-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-12 | 1958-08-14 | 1959-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-12 | 1962-08-14 | 1963-02-13 | $7700.00 | Window Closed / Lapsed |