Patent US 4755811A
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| Patent number | US 4755811A (click link for details and documents via Google Patents) |
|---|---|
| Title | Touch controlled zoom of waveform displays |
| Inventors | Keith R. Slavin, Donald Craig |
| Company | Tektronix Inc |
| Filing date | 1987-03-24 |
| Grant date | 1988-07-05 |