KO

Kazuo Ookawa

HI Hitachi: 1 patents #1,533 of 3,950Top 40%
Overall (2002): #178,924 of 266,432Top 70%
1
Patents 2002

Issued Patents 2002

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6378661 Elevator control system having an immersion proof structure Noboru Arabori, Tadashi Ariki, Sanho Gon, Hiroki Shinozuka, Tomofumi Hagiya 2002-04-30