Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5340961 | Plasma torch for transmitted arcs | Heinrich-Otto Rossner, Gebhard Tomalla | 1994-08-23 |
| 5292109 | Device for coupling the current feed to a metallurgical vessel | Bernhard Espendiller, Klaus Giertz, Ulrich Katschinski | 1994-03-08 |