US2791627A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Noise cancellation circuits with intermediate frequency amplifier screen grid noise detection
Assignee: RCA Corp
•
Filing: 1951-11-23
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Granted: 1957-05-07
•
Expires: 1971-11-23
Abstract
No abstract record available.
Inventors
- 👤 Lucius P Thomas
- 👤 Clyde W Hoyt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:38
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/14; H04N5/21; H04N5/213
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2304713A
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US2230295A
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US2294341A
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US2299333A
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US2293528A
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US2597629A
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US2535821A
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US2631230A
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US2602864A
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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) | 1960-05-06 | 1960-11-05 | 1961-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-06 | 1964-11-05 | 1965-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-06 | 1968-11-05 | 1969-05-07 | $7700.00 | Window Closed / Lapsed |