CY

Changke Yang

OE Otis Elevator: 1 patents #966 of 1,840Top 55%
Overall (All Time): #2,766,948 of 4,157,543Top 70%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
11203511 Traction system for elevator and elevator system WeiHua Yuan, LiuDi Gong 2021-12-21