Patent US 4188563A
| Patent number | US 4188563A (click link for details and documents via Google Patents) |
|---|---|
| Title | Cathode ray tube having an electron lens system including a meshless scan expansion post deflection acceleration lens |
| Inventors | Bozidar Janko |
| Company | Tektronix Inc |
| Filing date | 1978-08-31 |
| Grant date | 1980-02-12 |