Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4831359 | Four quadrant touch pad | — | 1989-05-16 |
| 4827195 | Motor control system for directing multiple devices | Mary C. O'Brien | 1989-05-02 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4831359 | Four quadrant touch pad | — | 1989-05-16 |
| 4827195 | Motor control system for directing multiple devices | Mary C. O'Brien | 1989-05-02 |