SG

Shiwen Guo

SC Shenzhen Grandsun Electronic Co.: 2 patents #13 of 36Top 40%
Overall (2020): #122,384 of 565,922Top 25%
2
Patents 2020

Issued Patents 2020

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
10789037 Hearing protection method, apparatus and system Zhenli Wang, Xin Yu, Haiquan Wu, Ruiwen Shi 2020-09-29
D892763 Earphone Yuanwen Huang, Haiquan Wu, Xin Yu, Jiugao Peng, Ruiwen Shi 2020-08-11