TH

Tadashi Hayakawa

HI Hitachi: 1 patents #814 of 2,935Top 30%
Overall (1989): #53,640 of 140,708Top 40%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4797068 Vacuum evacuation system Kazuaki Shiinoki, Sinji Mitsuhashi, Kotaro Naya 1989-01-10