US2473276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color television system
Assignee: Individual
•
Filing: 1946-05-23
•
Granted: 1949-06-14
•
Expires: 1966-05-23
Abstract
No abstract record available.
Inventors
- 👤 Thornton W Chew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:50
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/64; H04N9/73
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2272638A
Cited
US2375966A
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US2307188A
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US2296908A
Cited
US2309506A
Cited
US2337980A
Cited
US2294820A
Cited
US2413423A
Cited
US2335180A
Cited
US2423769A
Cited
US2389039A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-13 | 1952-12-13 | 1953-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-13 | 1956-12-13 | 1957-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-13 | 1960-12-13 | 1961-06-14 | $7700.00 | Window Closed / Lapsed |