AK

Akio Kumada

HI Hitachi: 1 patents #311 of 1,214Top 30%
📍 Kokubunji, JP: #13 of 45 inventorsTop 30%
Overall (1982): #77,618 of 81,411Top 100%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4352961 Transparent flat panel piezoelectric speaker Shigeo Nakamura 1982-10-05