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Du Dai

OEOtis Elevator: 1 patents #73 of 232Top 35%
Overall (2018): #431,293 of 503,207Top 90%
1 Patents 2018

Issued Patents 2018

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9994428 Brake for use in passenger conveyor system Alois Senger, Jian Cheng 2018-06-12

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Dúnio Couto1