LC

Lifei Cheng

OE Otis Elevator: 1 patents #99 of 278Top 40%
Overall (2020): #375,658 of 565,922Top 70%
1
Patents 2020

Issued Patents 2020

Patent #TitleCo-InventorsDate
10865074 Handrail automatically tensioning system and a method for adjusting tension level of handrail QingXi Cai, Jianguo Li, Xin Wei, Jie Hu, ZuAn Tang +1 more 2020-12-15