Patent US2508366A successfully refreshed from Google Patents.
US2508366A
Expired / Lapsed
US
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Radio compass demonstrator
Assignee: Individual
•
Filing: 1946-08-08
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Granted: 1950-05-23
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Expires: 1966-08-08
Abstract
No abstract record available.
Inventors
- 👤 Blain Marshall Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:11
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2321799A
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US2326764A
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US2366603A
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US2346693A
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US2333933A
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US2450240A
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US2402271A
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US2404386A
Cited
US2418834A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-22 | 1953-11-21 | 1954-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-22 | 1957-11-21 | 1958-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-22 | 1961-11-21 | 1962-05-23 | $7700.00 | Window Closed / Lapsed |