Patent US 3670199A
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| Patent number | US 3670199A (click link for details and documents via Google Patents) |
|---|---|
| Title | Cathode ray tube having auxiliary deflection plate to correct pincushion distortion |
| Inventors | James D Hawes |
| Company | Tektronix Inc |
| Filing date | 1970-04-06 |
| Grant date | 1972-06-13 |