SS

Shinji Shimokawa

AK Ashimori Kogyo Kabushiki Kaisha: 1 patents #1 of 9Top 15%
TC Tokyo Gas Co.: 1 patents #2 of 20Top 10%
📍 Seto, JP: #4 of 19 inventorsTop 25%
Overall (1989): #56,857 of 140,708Top 45%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4882470 Boring device for opening passages to branch portions of a lined main pipe line Katsuaki Zenbayashi, Hisao Otsuga, Akio Morinaga, Osamu Toyoshima 1989-11-21