Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4698761 | Automatic tunnel detector for a self-propelled traction vehicle | Charles Earl Cooper | 1987-10-06 |
| 4665319 | Self-propelled traction vehicle with low fuel consumption while idling | John E. Seepe | 1987-05-12 |
| 4592323 | Speed limiting means for variable-speed prime mover | — | 1986-06-03 |