Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4779287 | Tiltable metallurgical furnace vessel | Peter Heidenreich, Karl-Heinz Heinen, Wolfgang Muller | 1988-10-18 |
| 4679205 | Tiltable metallurgical furnace vessel | Peter Heidenreich, Karl-Heinz Heinen, Wolfgang Muller | 1987-07-07 |