Patent US2813147A successfully refreshed from Google Patents.
US2813147A
Expired / Lapsed
US
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Multipurpose control system for a color-television receiver
Assignee: Hazeltine Research Inc
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Filing: 1955-06-16
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Granted: 1957-11-12
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Expires: 1975-06-16
Abstract
No abstract record available.
Inventors
- 👤 Richman Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:01
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)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-11 | 1961-05-13 | 1961-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-11 | 1965-05-13 | 1965-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-11 | 1969-05-13 | 1969-11-12 | $7700.00 | Window Closed / Lapsed |