Patent US2412867A successfully refreshed from Google Patents.
US2412867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Search system for radio locators
Assignee: Westinghouse Electric Corp
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Filing: 1943-11-10
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Granted: 1946-12-17
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Expires: 1963-11-10
Abstract
No abstract record available.
Inventors
- 👤 Maynard R Briggs
- 👤 Angus A Macdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:47
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/12; H01Q3/16; H01Q3/18; G; G01; G01S; G01S1/00; G01S1/02; G01S13/00; G01S13/02; G01S13/06; G01S13/42; G01S13/422
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-12-16 | 1950-06-17 | 1950-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-12-16 | 1954-06-17 | 1954-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-12-16 | 1958-06-17 | 1958-12-17 | $7700.00 | Window Closed / Lapsed |