Patent US2659082A successfully refreshed from Google Patents.
US2659082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio direction finder
Assignee: Individual
•
Filing: 1946-04-30
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Granted: 1953-11-10
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Expires: 1966-04-30
Abstract
No abstract record available.
Inventors
- 👤 Paul A Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:23
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2266038A
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US2176469A
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US2189549A
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US2392420A
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US2415566A
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US2422072A
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US2405930A
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US2418143A
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US2449517A
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US2539402A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |