Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4846551 | Optical filter assembly for enhancement of image contrast and glare reduction of cathode ray display tube | John S. Matteucci, Michael Andreasen | 1989-07-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4846551 | Optical filter assembly for enhancement of image contrast and glare reduction of cathode ray display tube | John S. Matteucci, Michael Andreasen | 1989-07-11 |