Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9010876 | Spindle assembly for self-propelled vehicle | David A. Dull | 2015-04-21 |
| 6523678 | Conveyor pulley with quick-change features | David A. Roessler, Kevin C. Rorke, Frederick H. Thimmel | 2003-02-25 |