Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11158144 | Access control system having automatic status update | — | 2021-10-26 |
| 11123808 | Metal drilling tool | Ulrich Krenzer | 2021-09-21 |
| 11049346 | Visitor access control system with radio identification and facial recognition | — | 2021-06-29 |
| 10934132 | Lift system with predictive call production | Florian Troesch | 2021-03-02 |