Patent US2646521A successfully refreshed from Google Patents.
US2646521A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color television picture tube
Assignee: RCA Corp
•
Filing: 1950-03-23
•
Granted: 1953-07-21
•
Expires: 1970-03-23
Abstract
No abstract record available.
Inventors
- 👤 Jan A Rajchman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:07
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/12; H04N9/16; H04N9/22; H04N9/26; H01; H01J; H01J31/00; H01J31/08; H01J31/10; H01J31/20
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
FR866065A
Cited
US2280191A
Cited
US2372450A
Cited
US2461515A
Cited
US2513743A
Cited
US2446440A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-20 | 1957-01-19 | 1957-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-20 | 1961-01-19 | 1961-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-20 | 1965-01-19 | 1965-07-21 | $7700.00 | Window Closed / Lapsed |