Patent US 4553091A
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| Patent number | US 4553091A (click link for details and documents via Google Patents) |
|---|---|
| Title | Automatic vertical calibration method and system for an oscilloscope |
| Inventors | Lloyd Rodney Bristol |
| Company | Tektronix Inc |
| Filing date | 1983-02-07 |
| Grant date | 1985-11-12 |