US2681379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal operated automatic color control circuits
Assignee: RCA Corp
•
Filing: 1951-04-27
•
Granted: 1954-06-15
•
Expires: 1971-04-27
Abstract
No abstract record available.
Inventors
- 👤 Alfred C Schroeder
- 👤 Dalton H Pritchard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:43
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/64; H04N9/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2141343A
Cited
US2378746A
Cited
US2428946A
Cited
US2546972A
Cited
US2539440A
Cited
US2558489A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-14 | 1957-12-14 | 1958-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-14 | 1961-12-14 | 1962-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-14 | 1965-12-14 | 1966-06-15 | $7700.00 | Window Closed / Lapsed |