Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5058784 | Closing and/or regulating apparatus for tapping molten metal from a metallurgical vessel | Ernst Luhrsen, Andreas Schuler | 1991-10-22 |
| 4737326 | Refractory shapes of ceramic fiber-containing material | Ludwig Wirth, Ingo Elstner, Rudolf Ganz, Miroslav Rausch, Robert Burger | 1988-04-12 |