Patent US2724774A successfully refreshed from Google Patents.
US2724774A
Expired / Lapsed
US
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Slotted cylinder antenna
Assignee: RCA Corp
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Filing: 1952-06-03
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Granted: 1955-11-22
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Expires: 1972-06-03
Abstract
No abstract record available.
Inventors
- 👤 Fiet Owen Orlando
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:27
CPC Classifications
H; H01; H01Q; H01Q13/00; H01Q13/10; H01Q13/12; H01Q21/00; H01Q21/0006; H01Q21/0037; H01Q21/0043; H01Q21/0062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2129852A
Cited
US2349942A
Cited
US2414266A
Cited
US2574433A
Cited
US2423416A
Cited
US2496242A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-21 | 1959-05-23 | 1959-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-21 | 1963-05-23 | 1963-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-21 | 1967-05-23 | 1967-11-22 | $7700.00 | Window Closed / Lapsed |