US2527474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio beacon and discriminating circuit therefor
Assignee: Individual
•
Filing: 1943-10-14
•
Granted: 1950-10-24
•
Expires: 1963-10-14
Abstract
No abstract record available.
Inventors
- 👤 Luis W Alvarez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:09
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/74; G01S13/76; G01R; G01R29/00; G01R29/02; G01R29/027; G01R29/0273
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2134716A
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US2132590A
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US2211942A
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US2265996A
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GB528192A
Cited
US2308375A
Cited
US2321698A
Cited
US2277000A
Cited
US2418127A
Cited
US2434937A
Cited
US2433381A
Cited
US2444455A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-23 | 1954-04-24 | 1954-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-23 | 1958-04-24 | 1958-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-23 | 1962-04-24 | 1962-10-24 | $7700.00 | Window Closed / Lapsed |