QY

Qinghai Yang

PL Petrochina Company Limited: 1 patents #17 of 56Top 35%
Overall (2018): #272,084 of 503,207Top 55%
1
Patents 2018

Issued Patents 2018

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9874089 Bridge type concentric direct reading testing and commissioning instrument He Liu, Xiaohan Pei, Fuchao Sun, Lichen Zheng, Yang Gao 2018-01-23