Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5220981 | Elevator and a procedure for its control | Matti Kahkipuro | 1993-06-22 |
| 4880082 | Method for determining the position of an elevator car and a pulse count based floor selector | Matti Kahkipuro, Heimo Makinen | 1989-11-14 |
| 4805741 | Elevator brake | Johannes De Jong | 1989-02-21 |