Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4890158 | Recursive noise reduction filter for video test apparatus | William J. Cooper, Bruce J. Penney | 1989-12-26 |
| 4864386 | Double display mode for differential gain | Kenneth M. Ainsworth | 1989-09-05 |