RL

Ruguang Liu

OE Otis Elevator: 1 patents #64 of 199Top 35%
Overall (2024): #289,110 of 561,600Top 55%
1
Patents 2024

Issued Patents 2024

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11885387 Friction material and preparation method therefor, and friction part Guochen Gao 2024-01-30