Patent US2643352A successfully refreshed from Google Patents.
US2643352A
Expired / Lapsed
US
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Color kinescope
Assignee: International Standard Electric Corp
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Filing: 1948-06-05
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Granted: 1953-06-23
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Expires: 1968-06-05
Abstract
No abstract record available.
Inventors
- 👤 Louis W Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:41
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/12; H04N9/16; H04N9/22; H04N9/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB443896A
Cited
FR866065A
Cited
FR868403A
Cited
US2307188A
Cited
US2446249A
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US2446791A
Cited
US2532511A
Cited
US2458291A
Cited
US2446440A
Cited
US2518200A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |