Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9852565 | Method for operating a locking system, locking system, and tube safe | Manuela Engel-Dahan, Ralf Knobling | 2017-12-26 |
| 9799154 | Electronic key, electronic closure system and a method for allowing an access authorization | Manuela Engel-Dahan, Ralf Knobling | 2017-10-24 |