JO

Jiro Oka

Sumitomo Electric Industries: 1 patents #327 of 1,127Top 30%
Overall (1989): #140,412 of 140,708Top 100%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4869015 Electric shock insect repeller Ryohei Murakami 1989-09-26