Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11673767 | Elevator systems | Ralph S. Stripling | 2023-06-13 |
| 11414297 | Elevator safety device | Peter Herkel, Mustapha Toutaoui, Ralph S. Stripling, Raphael Pecek | 2022-08-16 |
| 11080429 | Safety circuit for an elevator system, device and method of updating such a safety circuit | — | 2021-08-03 |