Issued Patents 2018
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10155640 | Elevator system using rescue storage device for increased power | Felix Benjamin Donath, Peter Herkel, Daryl J. Marvin | 2018-12-18 |
| 9938115 | System and method for limiting over-voltage in power supply system | Peter Herkel | 2018-04-10 |