MM

Masaharu Matsumoto

OC Ohi Seisakusho Co.: 1 patents #6 of 32Top 20%
Sumitomo Electric Industries: 1 patents #327 of 1,127Top 30%
Overall (1989): #20,685 of 140,708Top 15%
2
Patents 1989

Issued Patents 1989

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4888808 Digital equalizer apparatus enabling separate phase and amplitude characteristic modification Seiichi Ishikawa, Katsuaki Satoh, Akihisa Kawamura 1989-12-19
4867220 Sunshade assembly of motor vehicle Hisato Tatsumi 1989-09-19