Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12372111 | Screw for screwing into plastic | Michael Achenbach, Ralf Birkelbach, Volker Dieckmann, Frank Dratschmidt, Jan Hackler +4 more | 2025-07-29 |
| 11754110 | Self-tapping screw | Michael Achenbach, Ralf Birkelbach, Volker Dieckmann, Frank Dratschmidt, Jan Hackler +4 more | 2023-09-12 |