TO

Tugio Oyamada

HI Hitachi: 1 patents #311 of 1,214Top 30%
Overall (1982): #19,747 of 81,411Top 25%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4352975 Pipe welding apparatus Kenichi Suzuki, Toshikazu Kishi, Eizo Shibato 1982-10-05