DY

Douwe Ybema

CO Cominco: 1 patents #1 of 15Top 7%
📍 Trail, CA: #1 of 5 inventorsTop 20%
Overall (1982): #68,229 of 81,411Top 85%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4345980 Electrowinning of zinc Richard T. Chow, Clifford J. Krauss 1982-08-24