Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885792 | Audio mixer architecture using virtual gain control and switching | Donald R. Christensen, Thomas A. Grancey | 1989-12-05 |
| 4871207 | Coach seat locking mechanism | — | 1989-10-03 |
| 4863125 | Flexible dispenser for bags | — | 1989-09-05 |