RL

Ruguang Liu

OE Otis Elevator: 1 patents #73 of 258Top 30%
Overall (2023): #273,578 of 537,848Top 55%
1
Patents 2023

Issued Patents 2023

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11702321 Traction machine assembly and elevator Guochen Gao, Fengkun Zhu 2023-07-18