US2666138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antenna
Assignee: RADIART Corp
•
Filing: 1950-05-25
•
Granted: 1954-01-12
•
Expires: 1970-05-25
Abstract
No abstract record available.
Inventors
- 👤 Edward J Ehrbar
- 👤 Raymond W Cronshey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:02
CPC Classifications
H; H01; H01Q; H01Q5/00; H01Q5/40; H01Q5/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1740851A
Cited
US2311472A
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US2289856A
Cited
US2505115A
Cited
US2447879A
Cited
US2578973A
Cited
US2495579A
Cited
US2563243A
Cited
US2532094A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-11 | 1957-07-13 | 1958-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-11 | 1961-07-13 | 1962-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-11 | 1965-07-13 | 1966-01-12 | $7700.00 | Window Closed / Lapsed |