ZC

Zuo Chen

CL Cnpc Chuanqing Drilling Engineering Company Limited: 1 patents #1 of 16Top 7%
Overall (2022): #185,159 of 548,613Top 35%
1
Patents 2022

Issued Patents 2022

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11225837 Dual-speed dual—core enhanced drilling equipment Liexiang Han, Bin LIU, Xiaofeng YANG, Sheng-Kang Yu, Jianlin Yao +10 more 2022-01-18