YF

Yonghua Feng

CC Crrc Qingdao Sifang Co.: 1 patents #114 of 309Top 40%
Overall (All Time): #1,827,900 of 4,157,543Top 45%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
11827251 Rail vehicle and bogie Mingxing S. Li, Hao Yin, Xin Yang, Junfeng Zhou 2023-11-28
9149649 Semiconductor laser blood oxygen therapeutic apparatus 2015-10-06