US2979720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Television receiving antenna
Assignee: RADION CORP
•
Filing: 1957-02-13
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Granted: 1961-04-11
•
Expires: 1977-02-13
Abstract
No abstract record available.
Inventors
- 👤 Ralph N Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:49
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/64; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/06; H01Q9/10; H01Q9/12; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32008; Y10T403/32032; Y10T403/32114; Y10T403/32196; Y10T403/71; Y10T403/7123
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1080882A
Cited
US2521798A
Cited
FR978295A
Cited
US2558487A
Cited
US2776152A
Cited
US2696370A
Cited
US2796516A
Cited
US2810909A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |