Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8662422 | Apparatus for treatment of snow and ice | Mart E. Ward, Randall L. Smedstad, Scott G. Lueken, Glenn L. Ungerer | 2014-03-04 |
| 7370818 | Apparatus for treatment of snow and ice | Mart E. Ward, Randall L. Smedstad, Scott G. Lueken, Glenn L. Ungerer | 2008-05-13 |
| 6761525 | Combination dump and spreader apparatus | Mark S. Hollinrake, Timothy Ray Schenk, David Alan Cabalka, Terry J. Sommerfelt, Thomas E. Amthauer +1 more | 2004-07-13 |
| 6585472 | Combination dump and spreader apparatus | Mark S. Hollinrake, Timothy Ray Schenk, David Alan Cabalka, Terry J. Sommerfelt, Thomas E. Amthauer +1 more | 2003-07-01 |