Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8960371 | Gravity driven start phase in power limited elevator rescue operation | Uwe Schoenauer | 2015-02-24 |
| 6563707 | Chassis for mounting component units of an electric switch cabinet for elevators and escalators | Hartmut Engler, Marvin Dehmlow, Vera Else Marta Steifa, Wolfgang Schoppa | 2003-05-13 |
| 5491405 | Level conversion of AC or DC voltage with noise rejection and low power consumption | Helmut Schroder-Brumloop | 1996-02-13 |