Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5662860 | Apparatus for producing molten pig iron by direct reduction | Antonius Klaassen | 1997-09-02 |
| 5639293 | Method and apparatus for production of iron from iron compounds | Johannes G. Bernard, Cornelis P. Teerhuis | 1997-06-17 |