Patent US 4811395A
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| Patent number | US 4811395A (click link for details and documents via Google Patents) |
|---|---|
| Title | Two-tone test signal method for BTSC calibration |
| Inventors | Edward J. Cleary Jr., Bruce Hofer |
| Company | Tektronix Inc |
| Filing date | 1987-10-08 |
| Grant date | 1989-03-07 |