Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4935685 | Motor controller for pumping units | Marvin W. Justus, David Watts | 1990-06-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4935685 | Motor controller for pumping units | Marvin W. Justus, David Watts | 1990-06-19 |