Patent US 4280091A
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| Patent number | US 4280091A (click link for details and documents via Google Patents) |
|---|---|
| Title | Variable current source having a programmable current-steering network |
| Inventors | David F. Hiltner |
| Company | Tektronix Inc |
| Filing date | 1979-10-29 |
| Grant date | 1981-07-21 |