Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4519836 | Method of processing lead sulphide or lead-zinc sulphide ores, or sulphide concentrates, or mixtures thereof | Anatoly P. Sychev, Jury I. Sannikov, Ivan P. Polyakov, Jury M. Abdeev | 1985-05-28 |