LH

Lihua HAN

Overall (2022): #360,547 of 548,613Top 70%
1
Patents 2022

Issued Patents 2022

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11268328 Double-walled drill pipe and drilling machine Ming YANG, Weixiang Lv, Ming Li, Tao Ma, Feng Cao +1 more 2022-03-08