Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6626627 | Screw with tamper-proof head | Helmut Oesterle, Felix Scheiwiller, Peter Kouwenhoven | 2003-09-30 |
| 6539826 | Screwing element | Helmut Oesterle, Felix Scheiwiller, Peter Kouwenhoven | 2003-04-01 |
| 6361259 | Screw for torque-limited fastening | Erich Palm | 2002-03-26 |
| 6240811 | Screwing element | Helmut Oesterle, Felix Scheiwiller, Peter Kouwenhoven | 2001-06-05 |