US3485942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for raising the signal-to-noise ratio of a frequency modulated subcarrier in a composite color tv signal
Assignee: Compagnie Francaise de Television SA
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Filing: 1966-03-04
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Granted: 1969-12-23
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Expires: 1986-03-04
Abstract
No abstract record available.
Inventors
- 👤 Gerard Melchior
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:25
CPC Classifications
H; H04; H04N; H04N11/00; H04N11/06; H04N11/18; E; E06; E06B; E06B9/00; E06B9/56; E06B9/80; E06B9/82; E06B9/84; E06B9/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2851532A
Cited
US3163717A
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US3092776A
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US3290433A
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US3303274A
Cited
US3365541A
Cited
US3333055A
Cited
US3305627A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |