Patent US2534451A successfully refreshed from Google Patents.
US2534451A
Expired / Lapsed
US
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Directional aerial
Assignee: Radio Industrie SA
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Filing: 1947-05-26
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Granted: 1950-12-19
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Expires: 1967-05-26
Abstract
No abstract record available.
Inventors
- 👤 Kahan Theo
- 👤 Wache Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:15
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/26; H01Q3/30; H01Q3/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2075808A
Cited
US2409183A
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US2482162A
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US2434253A
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US2477510A
Cited
US2453414A
Cited
US2436380A
Cited
US2438735A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-18 | 1954-06-19 | 1954-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-18 | 1958-06-19 | 1958-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-18 | 1962-06-19 | 1962-12-19 | $7700.00 | Window Closed / Lapsed |