US3025345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit arrangement for automatic readjustment of the background brightness and the contrast in a television receiver
Assignee: US Philips Corp
•
Filing: 1959-03-26
•
Granted: 1962-03-13
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Expires: 1979-03-26
Abstract
No abstract record available.
Inventors
- 👤 Suhrmann Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:53
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/44; H04N5/57; H04N5/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2264172A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-12 | 1965-09-11 | 1966-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-12 | 1969-09-11 | 1970-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-12 | 1973-09-11 | 1974-03-13 | $7700.00 | Window Closed / Lapsed |