Patent US 4890158A
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| Patent number | US 4890158A (click link for details and documents via Google Patents) |
|---|---|
| Title | Recursive noise reduction filter for video test apparatus |
| Inventors | Daniel G. Baker, William J. Cooper, Bruce J. Penney |
| Company | Tektronix Inc |
| Filing date | 1988-09-15 |
| Grant date | 1989-12-26 |