Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4226206 | Retractable propulsive means for small boats | — | 1980-10-07 |
| 4198802 | Axial flow rotary separator for a combine | Edward J. Hengen | 1980-04-22 |
| 4192322 | Axial flow separator with stepped threshing bar rotor | — | 1980-03-11 |