Patent US2499573A successfully refreshed from Google Patents.
US2499573A
Expired / Lapsed
US
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Signal-seeking tuner
Assignee: BELMONT RADIO Corp
•
Filing: 1945-11-05
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Granted: 1950-03-07
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Expires: 1965-11-05
Abstract
No abstract record available.
Inventors
- 👤 William L Dunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:43
CPC Classifications
H; H03; H03J; H03J7/00; H03J7/18; H03J7/30; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1503
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1968302A
Cited
GB351934A
Cited
US2099719A
Cited
US2056200A
Cited
US2369542A
Cited
US2326738A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-06 | 1953-09-05 | 1954-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-06 | 1957-09-05 | 1958-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-06 | 1961-09-05 | 1962-03-07 | $7700.00 | Window Closed / Lapsed |