Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4697646 | Deep tillage sweep | William M. Johnson | 1987-10-06 |
| 4638868 | Earth engaging implements | William M. Johnson | 1987-01-27 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4697646 | Deep tillage sweep | William M. Johnson | 1987-10-06 |
| 4638868 | Earth engaging implements | William M. Johnson | 1987-01-27 |