DH

Donghang Han

UB University Of Science And Technology Beijing: 1 patents #122 of 482Top 30%
Overall (All Time): #2,544,837 of 4,157,543Top 65%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
12139974 Petroleum drill-string shock absorbers Haiping Liu, Qi Lv, Dashan Shen, Dongmei Zhu 2024-11-12