Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883137 | System and method for controlling the ground speed and enhancing the maneuverability of an off-road vehicle | Lee J. Wanie, Stanley J. DeBraal, Michael Bedis | 1989-11-28 |
| 4852672 | Drill apparatus having a primary drill and a pilot drill | — | 1989-08-01 |
| 4838299 | Pulsation dampener apparatus | — | 1989-06-13 |