Patent US 2804571A
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| Patent number | US 2804571A (click link for details and documents via Google Patents) |
|---|---|
| Title | Unblanking circuit for cathode ray tubes |
| Inventors | John Kobbe |
| Company | Tektronix Inc |
| Filing date | 1953-04-20 |
| Grant date | 1957-08-27 |