Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4440569 | Recovery of zinc from zinc-containing sulphidic material | Donald R. Weir | 1984-04-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4440569 | Recovery of zinc from zinc-containing sulphidic material | Donald R. Weir | 1984-04-03 |