Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6913665 | Method and apparatus for the overlapping welding of sheet-like plastic materials | Paul Zimmerli | 2005-07-05 |
| 6644371 | Drive device for a handheld heater unit | Bruno von Wyl | 2003-11-11 |