Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5007959 | Process for converting of solid high-grade copper matte | Marc Reist, Hans Persson | 1991-04-16 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5007959 | Process for converting of solid high-grade copper matte | Marc Reist, Hans Persson | 1991-04-16 |