Patent US2507576A successfully refreshed from Google Patents.
US2507576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Push-button tuner for radio receivers
Assignee: Avco Manufacturing Corp
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Filing: 1945-01-19
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Granted: 1950-05-16
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Expires: 1965-01-19
Abstract
No abstract record available.
Inventors
- 👤 Reid John Drysdale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:42
CPC Classifications
H; H03; H03J; H03J5/00; H03J5/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2115676A
Cited
US2150562A
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US2209959A
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FR844499A
Cited
US2186068A
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US2231634A
Cited
US2245385A
Cited
US2282974A
Cited
US2354749A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-05-15 | 1953-11-14 | 1954-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-15 | 1957-11-14 | 1958-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-15 | 1961-11-14 | 1962-05-16 | $7700.00 | Window Closed / Lapsed |