US2978540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Television test apparatus
Assignee: RCA Corp
•
Filing: 1956-06-14
•
Granted: 1961-04-04
•
Expires: 1976-06-14
Abstract
No abstract record available.
Inventors
- 👤 Ralph S Coate
- 👤 Koreu Saul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:48
CPC Classifications
H; H04; H04N; H04N17/00; H04N17/04; H04N17/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2292045A
Cited
US2693530A
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US2668188A
Cited
US2576859A
Cited
US2683187A
Cited
US2742525A
Cited
US2741722A
Cited
US2818526A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |