JG

Jizhen Guan

BT Beijing University Of Technology: 1 patents #182 of 570Top 35%
Overall (All Time): #2,951,967 of 4,157,543Top 75%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9689121 Piston-type variable speed control device Jianjun SHI, Yafei Liu 2017-06-27