Patent US 4196345A
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| Patent number | US 4196345A (click link for details and documents via Google Patents) |
|---|---|
| Title | Operating parameter selection and entry device |
| Inventors | Guenther W. Wimmer, Douglas B. Bingham |
| Company | Tektronix Inc |
| Filing date | 1978-06-02 |
| Grant date | 1980-04-01 |