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LiuDi Gong

OE Otis Elevator: 1 patents #966 of 1,840Top 55%
Overall (All Time): #2,766,949 of 4,157,543Top 70%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11203511 Traction system for elevator and elevator system WeiHua Yuan, Changke Yang 2021-12-21