Patent US4542461A successfully refreshed from Google Patents.
US2467961A
Expired / Lapsed
US
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Antenna
Assignee: ELECTRONIES RES Inc
•
Filing: 1946-02-20
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Granted: 1949-04-19
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Expires: 1966-02-20
Abstract
No abstract record available.
Inventors
- 👤 Jr John B Caraway
- 👤 Kees Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:01
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/36; H01Q9/00; H01Q9/04; H01Q9/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2153768A
Cited
US2202368A
Cited
US2293136A
Cited
US2324462A
Cited
US2405123A
Cited
US2447879A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-18 | 1952-10-18 | 1953-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-18 | 1956-10-18 | 1957-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-18 | 1960-10-18 | 1961-04-19 | $7700.00 | Window Closed / Lapsed |