Patent US 3567991A
| 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 |