QD

Qingkai Du

TE Tencent: 1 patents #4,257 of 8,131Top 55%
Overall (All Time): #2,981,425 of 4,157,543Top 75%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9228755 Vent and cover plate assembly for dust-free workshop floor — 2016-01-05