Patent US2669675A successfully refreshed from Google Patents.
US2669675A
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US
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Display surface for color television tubes
Assignee: Chromatic Television Laboratories Inc
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Filing: 1952-01-08
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Granted: 1954-02-16
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Expires: 1972-01-08
Abstract
No abstract record available.
Inventors
- 👤 Ernest O Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:26
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/12; H04N9/16; H01; H01J; H01J19/00; H01J29/00; H01J29/46; H01J29/80; H01J29/803; H01J29/806; H01J9/00; H01J9/02; H01J9/14; H01J2893/00; H01J2893/0001; H01J2893/0012; H01J2893/0019; H01J2893/0022; H01J2893/0024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR866065A
Cited
US2446791A
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US2532511A
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US2446440A
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US2595548A
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US2566713A
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US2568448A
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US2577368A
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US2581487A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-15 | 1957-08-17 | 1958-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-15 | 1961-08-17 | 1962-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-15 | 1965-08-17 | 1966-02-16 | $7700.00 | Window Closed / Lapsed |