Patent US2920320A successfully refreshed from Google Patents.
US2920320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiolocation system
Assignee: Individual
•
Filing: 1954-12-03
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Granted: 1960-01-05
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Expires: 1974-12-03
Abstract
No abstract record available.
Inventors
- 👤 Karl F Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:21
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/87; G01S13/876; G01S1/00; G01S1/02; G01S13/02; G01S13/06; G01S13/08; G01S13/32; G01S13/34; G01S13/343
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2374666A
Cited
US2427219A
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US2515332A
Cited
US2654084A
Cited
US2545123A
Cited
US2649542A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |