Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6288359 | Welding device for two work pieces to be joined together by a weld seam which is closed in itself | Martin Koch, Hermann Bies | 2001-09-11 |
| 6288361 | Method and device for joining flat products to be connected such that they overlap | Hans Pircher, Rudolf Kawalla, Gerd Sussek, Ralf Polzin | 2001-09-11 |