Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6178669 | Plow hitch assembly for vehicles | Philip J. Quenzi | 2001-01-30 |
| 5899007 | Adjustable wing plow | Philip J. Quenzi | 1999-05-04 |
| 5640981 | Parts washer | Nels A. Niemela | 1997-06-24 |
| 5638618 | Adjustable wing plow | Eward R. Lahti, Terry L. Lahti | 1997-06-17 |
| D374316 | Parts washer | Nels A. Niemela | 1996-10-01 |
| D370096 | Parts washer | Nels A. Niemela | 1996-05-21 |