DL

Donglai Li

Ricoh Company: 1 patents #6,936 of 9,818Top 75%
Overall (All Time): #3,093,530 of 4,157,543Top 75%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
8660349 Screen area detection method and screen area detection system Hailong Yu, Wenbo Zhang, Pingping Pan, Weitao Gong 2014-02-25