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Patent US2742525A successfully refreshed from Google Patents.
US2742525A
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Color test pattern generator
Assignee: RCA Corp
•
Filing: 1951-04-27
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Granted: 1956-04-17
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Expires: 1971-04-27
Abstract
No abstract record available.
Inventors
- 👤 Norbert D Larky
- 👤 David D Holmes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:34
CPC Classifications
H; H04; H04N; H04N17/00; H04N17/04; H04N17/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CH233313A
Cited
US2405239A
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US2422204A
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US2425131A
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US2466044A
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US2518013A
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US2516972A
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US2541039A
Cited
US2557729A
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FR996919A
Cited
US2677721A
Cited
US2668188A
Cited
US2602918A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-17 | 1959-10-17 | 1960-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-17 | 1963-10-17 | 1964-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-17 | 1967-10-17 | 1968-04-17 | $7700.00 | Window Closed / Lapsed |