US2820090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color television
Assignee: Individual
•
Filing: 1952-04-01
•
Granted: 1958-01-14
•
Expires: 1972-04-01
Abstract
No abstract record available.
Inventors
- 👤 Mountain Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:11
CPC Classifications
H; H04; H04N; H04N11/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US802471A
Cited
US2296908A
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US2310863A
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US2389979A
Cited
US2416056A
Cited
US2431115A
Cited
US2452293A
Cited
US2528510A
Cited
US2532511A
Cited
US2617875A
Cited
US2674649A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |