Patent US2604869A successfully refreshed from Google Patents.
US2604869A
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Tuning indicator for combined television and frequency modulation receiver
Assignee: Avco Manufacturing Corp
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Filing: 1949-11-18
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Granted: 1952-07-29
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Expires: 1969-11-18
Abstract
No abstract record available.
Inventors
- 👤 Leonard S Depweg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:54
CPC Classifications
H; H03; H03J; H03J1/00; H03J1/06; Y; Y10; Y10S; Y10S116/00; Y10S116/31; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19647; Y10T74/19651
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1850640A
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US1885621A
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US2128833A
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US2132094A
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US2129756A
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US2261386A
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US2270772A
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US2309211A
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US2359125A
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US2441233A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-29 | 1956-01-28 | 1956-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-29 | 1960-01-28 | 1960-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-29 | 1964-01-28 | 1964-07-29 | $7700.00 | Window Closed / Lapsed |