US2481045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic volume control and sync separator for television receivers
Assignee: RCA Corp
•
Filing: 1945-03-12
•
Granted: 1949-09-06
•
Expires: 1965-03-12
Abstract
No abstract record available.
Inventors
- 👤 Alfred C Schroeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:54
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/44; H04N5/52; H04N5/53; H04N5/04; H04N5/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1890454A
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DE621465C
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US2018982A
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US2196364A
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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) | 1952-09-05 | 1953-03-07 | 1953-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-05 | 1957-03-07 | 1957-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-05 | 1961-03-07 | 1961-09-06 | $7700.00 | Window Closed / Lapsed |