Patent US2933731A successfully refreshed from Google Patents.
US2933731A
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Electromagnetic wave radiators
Assignee: AC Cossor Ltd
•
Filing: 1955-11-28
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Granted: 1960-04-19
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Expires: 1975-11-28
Abstract
No abstract record available.
Inventors
- 👤 Foster Kenneth
- 👤 Thiele Alan Philip Craven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:55
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/024; G01S7/026; H; H01; H01P; H01P1/00; H01P1/165; H01P1/17; H01Q; H01Q13/00; H01Q13/02; H01Q13/0241
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2611087A
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US2603709A
Cited
GB664926A
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US2682610A
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US2756422A
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US2858512A
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US2858535A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |