Patent US 4677620A
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| Patent number | US 4677620A (click link for details and documents via Google Patents) |
|---|---|
| Title | Graphical input of timing relationships |
| Inventors | Steven R. Sutton, Gerd H. Hoeren |
| Company | Tektronix Inc |
| Filing date | 1985-02-28 |
| Grant date | 1987-06-30 |