Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4425658 | Conductor arrangement for a three-phase electric arc furnace | Karlheinz Bretthauer | 1984-01-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4425658 | Conductor arrangement for a three-phase electric arc furnace | Karlheinz Bretthauer | 1984-01-10 |