Patent US2471264A successfully refreshed from Google Patents.
US2471264A
Expired / Lapsed
US
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Radio object location system
Assignee: AT&T Inc
•
Filing: 1945-01-01
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Granted: 1949-05-24
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Expires: 1965-01-01
Abstract
No abstract record available.
Inventors
- 👤 William H Doherty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:12
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB497147A
Cited
US2189549A
Cited
US2412703A
Cited
GB552072A
Cited
US2415566A
Cited
US2419567A
Cited
US2415981A
Cited
US2405930A
Cited
US2418143A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-23 | 1952-11-22 | 1953-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-23 | 1956-11-22 | 1957-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-23 | 1960-11-22 | 1961-05-24 | $7700.00 | Window Closed / Lapsed |