Patent US 3567991A
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| Patent number | US 3567991A (click link for details and documents via Google Patents) |
|---|---|
| Title | Cathode ray tube with improved electron gun structure |
| Inventors | Conrad Odenthal |
| Company | Tektronix Inc |
| Filing date | 1968-04-10 |
| Grant date | 1971-03-02 |