US2990447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color television receiver fine tuning indication
Assignee: RCA Corp
•
Filing: 1958-05-19
•
Granted: 1961-06-27
•
Expires: 1978-05-19
Abstract
No abstract record available.
Inventors
- 👤 Jr John Stark
- 👤 Wendell E Lavender
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:04
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/44; H04N5/50; H04N11/00; H04N11/06; H04N11/12; H04N11/14; H04N11/146
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2180944A
Cited
US2849529A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |