Patent US2644092A successfully refreshed from Google Patents.
US2644092A
Expired / Lapsed
US
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Antenna
Assignee: United States, WAR, Secretary of
•
Filing: 1945-08-30
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Granted: 1953-06-30
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Expires: 1965-08-30
Abstract
No abstract record available.
Inventors
- 👤 Jacob R Risser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:34
CPC Classifications
H; H01; H01Q; H01Q19/00; H01Q19/10; H01Q19/12; H01Q19/13; H01Q19/132
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB450484A
Cited
GB436355A
Cited
US2155821A
Cited
US2270965A
Cited
US2531455A
Cited
US2436408A
Cited
US2427005A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |