KK

Kei Koyama

RC Rion Co.: 1 patents #4 of 22Top 20%
Overall (2021): #376,738 of 548,734Top 70%
1
Patents 2021

Issued Patents 2021

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
D938595 Earphone Takashi Iwakura, Akihiro Soeta 2021-12-14