Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5667556 | Method of reprocessing zinc- and iron oxide-containing residual material | Andreas Orth, Peter Weber, Ernst Wallis | 1997-09-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5667556 | Method of reprocessing zinc- and iron oxide-containing residual material | Andreas Orth, Peter Weber, Ernst Wallis | 1997-09-16 |