US2637772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keyed automatic gain control
Assignee: RCA Corp
•
Filing: 1948-07-07
•
Granted: 1953-05-05
•
Expires: 1968-07-07
Abstract
No abstract record available.
Inventors
- 👤 Karl R Wendt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:28
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/44; H04N5/52; H04N5/53
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE621465C
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US2328946A
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FR845097A
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FR848207A
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FR868498A
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FR873623A
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US2566763A
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US2529428A
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US2547848A
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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) | 1956-05-04 | 1956-11-03 | 1957-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-04 | 1960-11-03 | 1961-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-04 | 1964-11-03 | 1965-05-05 | $7700.00 | Window Closed / Lapsed |