Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4620308 | Arc furnace electrode control | John A. Persson, Ross E. Andrews | 1986-10-28 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4620308 | Arc furnace electrode control | John A. Persson, Ross E. Andrews | 1986-10-28 |