DM

Delong Ma

PL Petrochina Company Limited: 1 patents #34 of 192Top 20%
Overall (2020): #492,400 of 565,922Top 90%
1
Patents 2020

Issued Patents 2020

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10845495 Method and device of identifying fracture Chao Feng, Tuanyu Teng, Qingzhou Yao, HAN-BING ZHANG, Lu Yin +1 more 2020-11-24