YZ

Yan Zhizhong

KO Kone: 1 patents #351 of 633Top 60%
Overall (All Time): #2,973,063 of 4,157,543Top 75%
1
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9809424 Method and an elevator arrangement Mark Peacock, Johannes De Jong 2017-11-07