Du Dai — 1 Patent in 2017

OEOtis Elevator: 1 patents #50 of 167Top 30%

Overall (2017): #435,371 of 506,227Top 90%

1 Patents 2017

Issued Patents 2017

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
9637351	Conveyor band drive system	Jian Cheng, Yongbo Zhang, Fengshu Yue, Huisheng Zheng, Hongmin Zhu +1 more	2017-05-02