US3588583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic elements mounted on the corners of the screen of color television tubes for compensating for the effect of the terrestrial magnetic field
Assignee: Thales SA
•
Filing: 1969-06-27
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Granted: 1971-06-28
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Expires: 1989-06-27
Abstract
Abstract FOR COMPENSATING THE EFFECT OF THE TERRESTRIAL MAGNETIC FIELD IN COLOR TELEVISION TUBES, COILS OR OTHER MAGNETIC ELEMENTS, EXTENDING ALONG THE TWO SIDES OF THE CORNER OF THE TUBE SCREEN, ARE PLACED IN FRONT OF AND AT THE FOUR CORNERS OF THE LATTER. THEY PROVIDE A MAGNETIC FIELD PARALLEL TO THE TUBE AXIS AND WHOSE INTENSITY DECREASES FROM THE SCREEN CORNERS TOWARDS THE CENTER THEREOF.
Inventors
- 👤 Jean Ciecierski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:44
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/12; H04N9/16; H04N9/29; H01; H01J; H01J29/00; H01J29/003; H01J2229/00; H01J2229/0007; H01J2229/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |