Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7124463 | Conveyor lip for motorized street sweeper | Thomas P. Mathews, Archie A. Weidner, Gregory J. Engel | 2006-10-24 |
| 6742219 | Air sweeping apparatus | Larry Wydra | 2004-06-01 |