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Patent US2954425A successfully refreshed from Google Patents.
US2954425A
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US
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Phase detector and color killer
Assignee: Hazeltine Research Inc
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Filing: 1953-07-15
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Granted: 1960-09-27
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Expires: 1973-07-15
Abstract
No abstract record available.
Inventors
- 👤 Richman Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:00
CPC Classifications
H; H03; H03L; H03L7/00; H03L7/06; H03L7/08; H03L7/10; H04; H04N; H04N9/00; H04N9/44; H04N9/455; H04N9/64; H04N9/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2735886A
Cited
US2648722A
Cited
US2766321A
Cited
US2771557A
Cited
US2835728A
Cited
US2752417A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-27 | 1964-03-28 | 1964-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-27 | 1968-03-28 | 1968-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-27 | 1972-03-28 | 1972-09-27 | $7700.00 | Window Closed / Lapsed |