Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5697423 | Apparatus for continuously casting | Marcel Witschi | 1997-12-16 |
| 5645159 | Method and apparatus for continuously casting metal | Erich Luginbuhl, Michel Meyer, Marcel Witschi, Ernst Zurcher | 1997-07-08 |