Issued Patents 2022
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11498812 | Elevator landing door assembly and its installation method | Markku Haapaniemi, Matti Rasanen, Tarvo Viita-Aho | 2022-11-15 |
| 11447370 | Method for constructing elevator | Otto Lanz, Matti Rasanen, Markku Haapaniemi, Janne Mikkonen, Janne Laine +9 more | 2022-09-20 |
| 11414303 | Method for modernizing elevator system | Markku Haapaniemi, Matti Rasanen, Tarvo Viita-Aho, Petri Kere, Janne Laine +4 more | 2022-08-16 |