Patent US 4277722A
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Patent number | US 4277722A (click link for details and documents via Google Patents) |
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Title | Cathode ray tube having low voltage focus and dynamic correction |
Inventors | Ken Hawken, Bozidar Janko |
Company | Tektronix Inc |
Filing date | 1979-05-14 |
Grant date | 1981-07-07 |