Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872672 | Proportional control with a joystick device for inputting computer variables | Theodore H. Roach | 1989-10-10 |
| 4824111 | Proportional control with an automatic centering manual input device for inputting computer variables | Theodore H. Roach | 1989-04-25 |