DS

Derrick B. Smith

AM Amax: 1 patents #59 of 180Top 35%
Overall (All Time): #4,094,634 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4283017 Selective flotation of cubanite and chalcopyrite from copper/nickel mineralized rock Robert D. Coale, Keith W. Sarbutt 1981-08-11