Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5632953 | Process and device for melting iron metallurgical materials in a coke-fired cupola | Hans U. Feustel, Joachim Mallon, Michael Schaaf, Edmund Wilms, Karl-Heinz Köhler +1 more | 1997-05-27 |