Patent US 4623819A
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| Patent number | US 4623819A |
|---|---|
| Title | Accelerating and scan expansion electron lens means for a cathode ray tube |
| Inventors | Bozidar Janko, Norman R. Franzen, Myron A. Bostwick Jr. |
| Company | Tektronix Inc |
| Filing date | 1985-08-12 |
| Grant date | 1986-11-18 |
| Cites |