TC

Tengteng Chang

C( China University Of Geosciences (Beijing): 1 patents #44 of 135Top 35%
Overall (All Time): #2,571,689 of 4,157,543Top 65%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11598151 Downhole power drilling tool having multi-stage dual plunger eccentric gear mechanism Yu Wang, Jiaxing Lu, Zhiqiao Wang, Baolin Liu, Qin Zhou 2023-03-07