US2794184A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple resonant slot antenna
Assignee: RCA Corp
•
Filing: 1953-07-21
•
Granted: 1957-05-28
•
Expires: 1973-07-21
Abstract
No abstract record available.
Inventors
- 👤 Robert F Kolar
- 👤 Ernest O Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:56
CPC Classifications
H; H01; H01Q; H01Q13/00; H01Q13/10; H01Q5/00; H01Q5/30; H01Q5/307; H01Q5/342; H01Q5/35
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2282292A
Cited
US2632851A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |