LH

Lihua HAN

Overall (All Time): #2,641,460 of 4,157,543Top 65%
1
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Issued Patents All Time

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