Patent US 4529915A
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| Patent number | US 4529915A (click link for details and documents via Google Patents) |
|---|---|
| Title | CRT Focus control circuit |
| Inventors | Marv LaVoie |
| Assignee | Tektronix Inc |
| Filing date | 1984-02-02 |
| Grant date | 1985-07-16 |