US3439211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Periodic demagnetization of color cathode ray tube aboard moving vehicle
Assignee: Compagnie Francaise de Television SA
•
Filing: 1967-02-16
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Granted: 1969-04-15
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Expires: 1987-02-16
Abstract
No abstract record available.
Inventors
- 👤 Pierre Cassagne
- 👤 Jean Besse
- 👤 Jean Finet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:47
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/12; H04N9/16; H04N9/29; H01; H01J; H01J29/00; H01J29/003; H01J2229/00; H01J2229/0007; H01J2229/0046; H01J2229/0053
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2962621A
Cited
US3274452A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |