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Derek G. E. Kerfoot

SL Sherritt Gordon Limited: 1 patents #1 of 5Top 20%
📍 St. Albert, CA: #1 of 3 inventorsTop 35%
Overall (1994): #142,798 of 165,921Top 90%
1
Patents 1994

Issued Patents 1994

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5344479 Upgrading copper sulphide residues containing nickel and arsenic Rein Raudsepp 1994-09-06