Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4428731 | Smelting furnace | Andre L. Delvaux, Pierre J. Lenoir | 1984-01-31 |
| 4214897 | Process for the extraction of non-ferrous metals from slags and other metallurgical by-products | Dirk Verhulst, Luc M. Fontainas | 1980-07-29 |