Patent US 3023336A
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| Patent number | US 3023336A (click link for details and documents via Google Patents) |
|---|---|
| Title | Cathode ray tube having post acceleration |
| Inventors | Lothar Frenkel |
| Company | Tektronix Inc |
| Filing date | 1957-10-25 |
| Grant date | 1962-02-27 |