Issued Patents All Time
Showing 51–53 of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7427096 | Window assembly for school bus | Michael J. Hulst | 2008-09-23 |
| 7003916 | Horizontal slider window assembly | David E. Nestell, Loren B. Renkema, Jim Galer | 2006-02-28 |
| 6691464 | Vertical slider window assembly | David E. Nestell, Loren B. Renkema, Jim Galer | 2004-02-17 |