Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7638734 | Method and circuit for contactless ignition of a welding arc with high frequency ignition pulse packets | Andreas Prinz, Walter Pammer, Uwe Kroiss | 2009-12-29 |
| 7538293 | Spot welding tool for resistance welding of workpieces | Walter Stieglbauer | 2009-05-26 |