CY

Changqun Yang

Overall (2021): #493,088 of 548,734Top 90%
1
Patents 2021

Issued Patents 2021

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11009135 Four valve disc frictionless ball valve Zhongshan Tian, Jun Yuan, Shaochuan Lai, Bo Wang, Yulong Feng +2 more 2021-05-18