YM

Yajuan Ma

TC Tianjin Hualai Technology Co.: 1 patents #12 of 22Top 55%
Overall (All Time): #2,513,265 of 4,157,543Top 65%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
D1034270 Smart doorbell Xiyin Xu, Jincan Lv, Bo Li, Qing Zhang, Huaizhong Xie 2024-07-09