Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5932853 | Identification system for a lift installation | Paul Friedli, Kilian Schuster | 1999-08-03 |
| 5689094 | Elevator installation | Paul Friedli, Hans-Peter Bornhauser | 1997-11-18 |