Patent US2929925A successfully refreshed from Google Patents.
US2929925A
Expired / Lapsed
US
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Transponder system responsive to simultaneous identification and object locating signals
Assignee: Individual
•
Filing: 1946-01-03
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Granted: 1960-03-22
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Expires: 1966-01-03
Abstract
No abstract record available.
Inventors
- 👤 Marcus D O'day
- 👤 Donald R Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:47
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/74; G01S13/76; G01S13/78
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1894019A
Cited
US2211942A
Cited
US2252083A
Cited
US2402459A
Cited
US2415359A
Cited
US2415919A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-22 | 1963-09-21 | 1964-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-22 | 1967-09-21 | 1968-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-22 | 1971-09-21 | 1972-03-22 | $7700.00 | Window Closed / Lapsed |