Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10087047 | Door system for an elevator installation | Ralph Kuppelwieser, Ernst Luthi | 2018-10-02 |
| 10023437 | Door system for an elevator installation | Ralph Kuppelwieser, Ernst Luthi | 2018-07-17 |