Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4705449 | Skid-steer vehicle | Leslie L. Christianson, Donell P. Froehlich, Kellen J. Chicoine | 1987-11-10 |
| 4662472 | Electric tractor | Leslie L. Christianson, Donell P. Froehlich, Mylo A. Hellickson | 1987-05-05 |