Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9518318 | Method and device for hardening work pieces and workpieces hardened according to said method | Volker Heuer, Gunther Schmitt, Gerhard Welzig | 2016-12-13 |
| 6913449 | Apparatus for the treatment of metallic workpieces with cooling gas | Georg Stueber, Gerhard Welzig, Volker Heuer | 2005-07-05 |