Patent US2790930A successfully refreshed from Google Patents.
US2790930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color television image tube and system therefor
Assignee: Individual
•
Filing: 1955-02-21
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Granted: 1957-04-30
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Expires: 1975-02-21
Abstract
No abstract record available.
Inventors
- 👤 Meguer V Kalfaian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:45
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/12; H04N9/16; H04N9/22; H04N9/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2630548A
Cited
US2530431A
Cited
US2457911A
Cited
US2657331A
Cited
US2577368A
Cited
US2689926A
Cited
US2634326A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-29 | 1960-10-29 | 1961-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-29 | 1964-10-29 | 1965-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-29 | 1968-10-29 | 1969-04-30 | $7700.00 | Window Closed / Lapsed |