Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9834410 | Elevator installation | Holger Zerelles, Bernd Altenburger, Ronald Dietze | 2017-12-05 |
| 9783391 | Elevator installation | Holger Zerelles, Bernd Altenburger, Ronald Dietze | 2017-10-10 |