ZX

Zongfa Xie

Overall (2021): #187,479 of 548,734Top 35%
1
Patents 2021

Issued Patents 2021

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11111825 Hydraulic valve mechanism with variable valve opening times and internal combustion engine Zhaoyu Wang, Kang Han 2021-09-07