SO

Seiichi Ozawa

OI Ozawa Concrete Industry: 1 patents #1 of 1Top 100%
Overall (1982): #31,690 of 81,411Top 40%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4314957 Method for manufacture of polymer-impregnated hollow concrete product — 1982-02-09