Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8573915 | Trailer | Dale J. Dierks, Michael Hanson, Don L. Huber, A. Dean Oehlerking, Cynthia A. Bjerrum | 2013-11-05 |
| 7658587 | Hydraulic tail trailer | Dale J. Dierks, A. Dean Oehlerking, Brent Hohman, Cynthia A. Bjerrum, Don L. Huber +1 more | 2010-02-09 |
| 7547178 | Hydraulic tail trailer | Dale J. Dierks, A. Dean Oehlerking, Brent Hohman, Cynthia A. Bjerrum | 2009-06-16 |
| 6036207 | Slide axle trailer | A. Dean Oehlerking, Harry E. Voelzke, Dale J. Dierks | 2000-03-14 |
| 5667231 | Trailer | Dale J. Dierks, A. Dean Oehlerking, Harry E. Voelzke | 1997-09-16 |