Patent US 4890237A
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| Patent number | US 4890237A (click link for details and documents via Google Patents) |
|---|---|
| Title | Method and apparatus for signal processing |
| Inventors | Robert W. Bales, Lynn T. Olson |
| Company | Tektronix Inc |
| Filing date | 1989-05-25 |
| Grant date | 1989-12-26 |