AK

Akio Kumada

HM Hitachi Maxell: 1 patents #26 of 102Top 30%
📍 Kokubunji, JP: #41 of 106 inventorsTop 40%
Overall (1989): #134,652 of 140,708Top 100%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4868446 Piezoelectric revolving resonator and ultrasonic motor — 1989-09-19