US2594871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antenna
Assignee: United States, WAR, Secretary of
•
Filing: 1945-07-09
•
Granted: 1952-04-29
•
Expires: 1965-07-09
Abstract
No abstract record available.
Inventors
- 👤 Chu Lan Jen
- 👤 William O Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:45
CPC Classifications
H; H01; H01Q; H01Q19/00; H01Q19/10; H01Q19/12; H01Q19/13; H01Q19/138
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2061508A
Cited
US2283935A
Cited
US2270965A
Cited
US2436408A
Cited
US2434253A
Cited
US2469419A
Cited
US2421988A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-29 | 1955-10-29 | 1956-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-29 | 1959-10-29 | 1960-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-29 | 1963-10-29 | 1964-04-29 | $7700.00 | Window Closed / Lapsed |