Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5709426 | Motor vehicle body | Delbert D. DeRees | 1998-01-20 |
| 5639155 | Multidirectional headlamp mount with manually adjustable elevation angle | David J. Kowall, Delbert D. DeRees | 1997-06-17 |
| 4458937 | Drag reducer for tractor trailer | Ronald L. Beckmann, Willard W. Gregg | 1984-07-10 |