Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853697 | Keyboard with manual-control keys combined with a display system | Paolo Pellizzari | 1989-08-01 |
| 4812677 | Power supply control with false shut down protection | — | 1989-03-14 |