Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5877462 | Safety equipment for multimobile elevator groups | — | 1999-03-02 |
| 5693919 | Evacuation system for elevators | Edmund Sager | 1997-12-02 |
| 5612519 | Method and apparatus for assigning calls entered at floors to cars of a group of elevators | — | 1997-03-18 |