WF

William E. Friestad

CO Cognis: 1 patents #89 of 179Top 50%
Overall (All Time): #3,781,161 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5454917 Apparatus and process for recovering metal from an aqueous solution Phillip L. Mattison, John Fast 1995-10-03