QL

Qing'en Li

Overall (All Time): #2,858,195 of 4,157,543Top 70%
1
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10293286 Water purification device based on filter cartridge anti-counterfeiting identification Yaowu Zhong, Xiaochun Pi 2019-05-21