Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4831814 | Pull type swather | Kenneth A. Frisk | 1989-05-23 |
IK
Irving B. Kardal
Overall (1989): #102,262 of 140,708Top 75%
1
Patents 1989