Patent US3518362A successfully refreshed from Google Patents.
US3518362A
Expired / Lapsed
US
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Demodulating circuit for waves frequency modulated by signals of the video type
Assignee: Compagnie Francaise de Television SA
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Filing: 1967-02-27
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Granted: 1970-06-30
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Expires: 1987-02-27
Abstract
No abstract record available.
Inventors
- 👤 Roland Fessard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:46
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/04; H04N7/045; H03; H03D; H03D3/00; H04N11/00; H04N11/06; H04N11/18; H04N11/186; H04N5/00; H04N5/14; H04N5/16; H04N5/165; H04N9/00; H04N9/64; H04N9/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3147441A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-29 | 1973-12-29 | 1974-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-29 | 1977-12-29 | 1978-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-29 | 1981-12-29 | 1982-06-30 | $7700.00 | Window Closed / Lapsed |