SI

Saburo Ishijima

JC Japan Oxygen Co.: 2 patents #9 of 44Top 25%
Overall (All Time): #2,358,692 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4457488 Sluice valve arrangement Hiroshi Ishii, Hiroshi Morii 1984-07-03
4417722 Vacuum furnace for heat treatment Hiroshi Ishii, Hiroshi Morii 1983-11-29