Issued Patents 2023
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11814888 | Fire protection fastening device for fastening a door actuator | Alexander Hellwig, Thomas Salutzki, Volker Bienek | 2023-11-14 |
| 11725445 | Backplate for a door actuator | Alexander Hellwig, Thomas Salutzki | 2023-08-15 |