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Patent US2617875A successfully refreshed from Google Patents.
US2617875A
Expired / Lapsed
US
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Apparatus for color television
Assignee: Allen B du Mont Laboratories Inc
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Filing: 1948-07-29
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Granted: 1952-11-11
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Expires: 1968-07-29
Abstract
No abstract record available.
Inventors
- 👤 Forest Lee De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:03
CPC Classifications
H; H04; H04N; H04N11/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2416053A
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US2455710A
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GB589345A
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US2431115A
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US2452293A
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US2457415A
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US2508267A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-11 | 1956-05-12 | 1956-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-11 | 1960-05-12 | 1960-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-11 | 1964-05-12 | 1964-11-11 | $7700.00 | Window Closed / Lapsed |