Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6308900 | Vehicle mounted sand spreader | Larry Cole, Irwin Plested, Achim Martin, Larry Magill | 2001-10-30 |
| 6179230 | Vehicle mounted sand spreader | Larry Cole, Irwin Plested, Achim Martin, Larry Magill | 2001-01-30 |