Patent US2512137A successfully refreshed from Google Patents.
US2512137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antenna
Assignee: United States, WAR, Secretary of
•
Filing: 1944-06-16
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Granted: 1950-06-20
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Expires: 1964-06-16
Abstract
No abstract record available.
Inventors
- 👤 Buchwalter Louise
- 👤 George G Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:05
CPC Classifications
H; H01; H01Q; H01Q21/00; H01Q21/06; H01Q21/20; H01Q21/205
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2252062A
Cited
US2239724A
Cited
US2247739A
Cited
US2272839A
Cited
US2236393A
Cited
US2199635A
Cited
US2258953A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-19 | 1953-12-19 | 1954-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-19 | 1957-12-19 | 1958-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-19 | 1961-12-19 | 1962-06-20 | $7700.00 | Window Closed / Lapsed |