Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5155305 | Delayed start of elevator car deceleration and creep using VVVF technology | Herbert K. Horbruegger | 1992-10-13 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5155305 | Delayed start of elevator car deceleration and creep using VVVF technology | Herbert K. Horbruegger | 1992-10-13 |