Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5676908 | Plate for cooling shaft furnaces | Axel Kubbutat, Werner Otremba | 1997-10-14 |
| 5251882 | Liquid-carrying cooling element for shaft furnaces | Bruno Kammerling, Urs Steiner | 1993-10-12 |