Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6626627 | Screw with tamper-proof head | Norbert Koeppel, Felix Scheiwiller, Peter Kouwenhoven | 2003-09-30 |
| 6558098 | Fixing element and method for fixing insulation tracks or plates on a fixed substructure | Beda Angehrn, Daniel Gasser, Norbert Koppel, Werner Patsch | 2003-05-06 |
| 6539826 | Screwing element | Norbert Koeppel, Felix Scheiwiller, Peter Kouwenhoven | 2003-04-01 |