Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6312327 | Vandal resistant fresh air filter housing | Robert Joseph Hachmann, Timothy Aloysius Averkamp | 2001-11-06 |
| 4898078 | Hydraulic system for a work vehicle | Douglas M. Gage | 1990-02-06 |
| 4809586 | Hydraulic system for a work vehicle | Douglas M. Gage | 1989-03-07 |
| 4702520 | Adjustable armrest with integral vehicle controls | Edwin Lee Whisler, Frederick D. Griswold, Jr. | 1987-10-27 |