US2540532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Superheterodyne receiver with compensation for mistuning caused by automatic volume control
Assignee: RCA Corp
•
Filing: 1945-12-18
•
Granted: 1951-02-06
•
Expires: 1965-12-18
Abstract
No abstract record available.
Inventors
- 👤 Winfield R Koch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:16
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/08; H03D; H03D3/00; H03D3/02; H03D3/06; H03D3/08; H03G; H03G3/00; H03G3/20; H03G3/22; H03G5/00; H03G5/16; H03G5/24; H03G5/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1813488A
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US1945096A
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US2039615A
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US2051898A
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US2072964A
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US2148633A
Cited
US2206181A
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US2231368A
Cited
US2263825A
Cited
US2278030A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |