Patent US3204027A successfully refreshed from Google Patents.
US3204027A
Expired / Lapsed
US
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Contrast control circuit
Assignee: TDK Micronas GmbH
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Filing: 1962-12-20
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Granted: 1965-08-31
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Expires: 1982-12-20
Abstract
No abstract record available.
Inventors
- 👤 Louis E Clements
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:12
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/40; H04N1/403; H04N5/00; H04N5/14; H04N5/20; H04N5/44; H04N5/57
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) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |