Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4834791 | Method for producing raw iron from iron concentrates for the manufacture of gas, and plant apparatus for carrying out the method | Mikael Brunner, Dan Kaufmann, Krister Torsell | 1989-05-30 |