Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4832925 | Recovery of zinc from zinc-containing sulphidic material | Ian M. Masters, Barry N. Doyle | 1989-05-23 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4832925 | Recovery of zinc from zinc-containing sulphidic material | Ian M. Masters, Barry N. Doyle | 1989-05-23 |