Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6485675 | Bottom for a metallurgical vessel with a direct current electric arc device | Konrad Friebe | 2002-11-26 |
| 6347110 | Charging device for low blast furnaces | Bertram Rupietta | 2002-02-12 |