FH

FeiQun He

OE Otis Elevator: 1 patents #966 of 1,840Top 55%
Overall (All Time): #3,025,600 of 4,157,543Top 75%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
9487378 Machine roomless elevator TianMing Lin, Jianwei Zhang, Guohua Zhang 2016-11-08