Patent US 4763117A
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| Patent number | US 4763117A |
|---|---|
| Title | Measurement instruments with multiple operation levels |
| Inventors | John D. Blattner, David B. Moser, Sam M. Deleganes |
| Company | Tektronix Inc |
| Filing date | 1987-05-26 |
| Grant date | 1988-08-09 |
| Cites |