LZ

Lifeng Zhang

OE Otis Elevator: 1 patents #94 of 284Top 35%
Overall (2022): #358,734 of 548,613Top 70%
1
Patents 2022

Issued Patents 2022

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11235949 Safety device, elevator safety system and elevator system — 2022-02-01