Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4396426 | Manufacture of lead from sulphidic lead raw material | Stig A. Petersson | 1983-08-02 |
| 4388110 | Method for recovering the metal content of complex sulphidic metal raw materials | Stig A. Petersson | 1983-06-14 |