Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4719840 | Stiff-backed ramming chain | Ronald A. Larson | 1988-01-19 |
| 4593605 | Fluid power transfer device | — | 1986-06-10 |
| 4518320 | Variable displacement pump system | — | 1985-05-21 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4719840 | Stiff-backed ramming chain | Ronald A. Larson | 1988-01-19 |
| 4593605 | Fluid power transfer device | — | 1986-06-10 |
| 4518320 | Variable displacement pump system | — | 1985-05-21 |