Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6544470 | Feeding device for electrical shaft furnaces with an electrode-receiving central tube | Klaus Schmale, Andreas Schüring, Guido GRUND | 2003-04-08 |
| 6368511 | Conditioning method for dehydrating clarification sludge | Heinz-Günther Weissenberg, Thomas Melin, Bernhard Vosteen | 2002-04-09 |