Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10099892 | Elevator group controller with wear based call allocation of elevators | Marja-Liisa Siikonen, Harri Hakala | 2018-10-16 |
| 8205722 | Method and system for dividing destination calls in elevator system | Marja-Liisa Siikonen | 2012-06-26 |
| 7900750 | Elevator system | Veikko Mattsson, Marja-Liisa Siikonen | 2011-03-08 |