Patent US2679043A successfully refreshed from Google Patents.
US2679043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beacon receiver
Assignee: United States, WAR, Secretary of
•
Filing: 1946-05-21
•
Granted: 1954-05-18
•
Expires: 1966-05-21
Abstract
No abstract record available.
Inventors
- 👤 Harry J Lipkin
- 👤 Grambsch Russel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:29
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/74; G01S13/76; G01S13/762
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2141343A
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US2406019A
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US2419571A
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US2415359A
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US2414992A
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US2415667A
Cited
US2425315A
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US2427191A
Cited
US2530096A
Cited
US2451044A
Cited
US2548813A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-17 | 1957-11-16 | 1958-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-17 | 1961-11-16 | 1962-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-17 | 1965-11-16 | 1966-05-18 | $7700.00 | Window Closed / Lapsed |