Patent US 5077498A
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| Patent number | US 5077498A (click link for details and documents via Google Patents) |
|---|---|
| Title | Pinched electron beam cathode-ray tube with high-voltage einzel focus lens |
| Inventors | Conrad Odenthal |
| Company | Tektronix Inc |
| Filing date | 1991-02-11 |
| Grant date | 1991-12-31 |