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US2704792A
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Amplifier with adjustable peak frequency response
Assignee: RCA Corp
•
Filing: 1950-06-28
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Granted: 1955-03-22
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Expires: 1970-06-28
Abstract
No abstract record available.
Inventors
- 👤 Eberhard Everett
- 👤 Richard O Endres
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:23
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/42; H03F1/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1869536A
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US2226945A
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US2310910A
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US2261619A
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US2486776A
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US2502479A
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US2647957A
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US2659773A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-21 | 1958-09-20 | 1959-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-21 | 1962-09-20 | 1963-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-21 | 1966-09-20 | 1967-03-22 | $7700.00 | Window Closed / Lapsed |