NY

Norio Yamakawa

HI Hitachi: 1 patents #311 of 1,214Top 30%
HC Hitachi Chemical Company: 1 patents #5 of 49Top 15%
📍 Ibaraki, JP: #62 of 203 inventorsTop 35%
Overall (1982): #40,416 of 81,411Top 50%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4355254 Brush holding device for electric rotary machine Norihiro Oki, Shoji Motegi, Yasuyuki Wachi, Yoshio Takikawa 1982-10-19