DG

David L. Gefvert

SC Sherex Chemical Co.: 1 patents #1 of 2Top 50%
🗺 Ohio: #979 of 4,093 inventorsTop 25%
Overall (1994): #145,880 of 165,921Top 90%
1
Patents 1994

Issued Patents 1994

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5284633 Solvent extraction of precious metals with hydroxyquinoline and stripping with acidified thiourea 1994-02-08