Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6050008 | Vehicle mounted accessory assembly | James R. Doornek, Steven Klug, Chad Thomas Barker, Christian Torp Nielsen | 2000-04-18 |
| 5806213 | Rotatable support wheels for a snowplow | James R. Doornek | 1998-09-15 |
| 5806214 | Support wheels mounted in the vicinity of the center of gravity of a snowplow | John Robert Behrens, James R. Doornek | 1998-09-15 |