Patent US2689305A successfully refreshed from Google Patents.
US2689305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antenna
Assignee: United States, WAR, Secretary of
•
Filing: 1945-07-09
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Granted: 1954-09-14
•
Expires: 1965-07-09
Abstract
No abstract record available.
Inventors
- 👤 Henry J Riblet
- 👤 Roy C Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:47
CPC Classifications
H; H01; H01Q; H01Q19/00; H01Q19/10; H01Q19/12; H01Q19/17
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1301473A
Cited
US2106771A
Cited
US2605413A
Cited
US2480208A
Cited
US2436380A
Cited
US2458885A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-13 | 1958-03-15 | 1958-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-13 | 1962-03-15 | 1962-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-13 | 1966-03-15 | 1966-09-14 | $7700.00 | Window Closed / Lapsed |