Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4474327 | Fertilizer spreader | Charles A. Mattson, James J. Michel | 1984-10-02 |
| 4387852 | Fertilizer spreader | Charles A. Mattson, James J. Michel | 1983-06-14 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4474327 | Fertilizer spreader | Charles A. Mattson, James J. Michel | 1984-10-02 |
| 4387852 | Fertilizer spreader | Charles A. Mattson, James J. Michel | 1983-06-14 |