Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4679989 | Pump shovel bulk unloader | Charles E. Harriman | 1987-07-14 |
| 4505405 | Proportional pumping system | Lawrence S. Kelly, Dean L. Schaffran | 1985-03-19 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4679989 | Pump shovel bulk unloader | Charles E. Harriman | 1987-07-14 |
| 4505405 | Proportional pumping system | Lawrence S. Kelly, Dean L. Schaffran | 1985-03-19 |