Issued Patents 2023
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11814888 | Fire protection fastening device for fastening a door actuator | Alexander Hellwig, Sabine Wiemann, Volker Bienek | 2023-11-14 |
| 11725445 | Backplate for a door actuator | Alexander Hellwig, Sabine Wiemann | 2023-08-15 |
| 11578522 | Door actuator for opening and/or closing a door | Alexander Hellwig, Sabine Weimann | 2023-02-14 |