DM

Donghui Ma

BC Beijing Chj Automotive Technology Co.: 2 patents #1 of 4Top 25%
Overall (2019): #177,080 of 560,194Top 35%
2
Patents 2019

Issued Patents 2019

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
D841574 Battery Jia Na, Xiangqi Wang 2019-02-26
D839161 Seat for a car Ruiwen Zhang 2019-01-29