Patent US 4761640A
| Patent number | US 4761640A (click link for details and documents via Google Patents) |
|---|---|
| Title | Positioning cursors at specific points on a waveform display |
| Inventors | Keith R. Slavin |
| Company | Tektronix Inc |
| Filing date | 1987-03-24 |
| Grant date | 1988-08-02 |