Patent GB464774A successfully refreshed from Google Patents.
US2972743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined infrared-radar antenna
Assignee: Westinghouse Electric Corp
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Filing: 1957-06-19
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Granted: 1961-02-21
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Expires: 1977-06-19
Abstract
No abstract record available.
Inventors
- 👤 Emil L Svensson
- 👤 Jefferson O Hamby
- 👤 Richard F Higby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:23
CPC Classifications
H; H01; H01Q; H01Q15/00; H01Q15/0006; H01Q15/0013; H01Q5/00; H01Q5/20; H01Q5/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-21 | 1964-08-22 | 1965-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-21 | 1968-08-22 | 1969-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-21 | 1972-08-22 | 1973-02-21 | $7700.00 | Window Closed / Lapsed |