Patent US 5621310A
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| Patent number | US 5621310A (click link for details and documents via Google Patents) |
|---|---|
| Title | High frequency calibration circuit |
| Inventors | Kevin E. Cosgrove, Richard J. Huard |
| Company | Tektronix Inc |
| Filing date | 1995-06-07 |
| Grant date | 1997-04-15 |