HH

Hideo Hiraoka

DK Denki Kagaku Kogyo: 1 patents #1 of 24Top 5%
Overall (1982): #58,995 of 81,411Top 75%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4311941 Thermionic cathode supporting device Masaru Amemiya, Hirotoshi Hagiwara 1982-01-19