Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8992156 | Conveyor for hopper bottom transportation vehicle | Beric Duane Haukaas, Vincent Colistro | 2015-03-31 |
| 6945182 | Midrow levelling attachment for a seeder | Duane Haukaas | 2005-09-20 |