Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5698129 | Sliding gate valve for a metallurgical vessel | Werner Keller, Walter Toaldo, Werner Plattner, Anton Pfyl | 1997-12-16 |
| 4186056 | Device for closing the filling opening of a coke oven chamber | Johannes Wulfmeier | 1980-01-29 |