Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7257979 | Device and method for reshaping bar-shaped materials particularly for drawing and extruding | Werner Witte, Peter Bilstein | 2007-08-21 |
| 5087344 | Electrolysis cell for gas-evolving electrolytic processes | Hanno Wenske, Arnold Gallien, Wolfgang Hanke, Wolfgang Lampe | 1992-02-11 |