HT

Hiroshi Takakura

HI Hitachi: 1 patents #814 of 2,935Top 30%
Overall (1989): #103,990 of 140,708Top 75%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4886995 Heater for indirectly-heated cathode Sachio Koizumi 1989-12-12