Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7124463 | Conveyor lip for motorized street sweeper | Michael H. Lenzmeier, Archie A. Weidner, Gregory J. Engel | 2006-10-24 |
| 6870110 | Float switch with protective boot | Charles J. Sorbo, David P. Curry, James B. Dockendorff | 2005-03-22 |
| 5996174 | Hand control for manipulating vacuum pickup hose | Steven L. Boomgaarden | 1999-12-07 |
| 5069136 | Two-stage release mechanism and method for self-righting a load | Eric Axelson | 1991-12-03 |