Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7339133 | Stud welding method and stud welding device particularly for stud welding without a support foot | Ulrich Citrich | 2008-03-04 |
| 7129437 | Method for monitoring a welding process during the welding of studs and device for carrying out said method | Ulrich Citrich, Eduard Kirchner | 2006-10-31 |
| 7053331 | Stud welding method and stud welding device, especially for stud welding without a support foot | Ulrich Citrich | 2006-05-30 |
| 6933458 | Method for positioning a welding bolt and bolt welding head | Ulrich Citrich, Steffen Hailer | 2005-08-23 |
| 6825434 | Method for welding a bolt onto a workpiece and a bolt-welding device | Ulrich Citrich, Steffen Hailer | 2004-11-30 |
| 6750417 | Stud welding head | Ulrich Citrich | 2004-06-15 |