DH

David Hoffman

AH American Hoechst: 1 patents #1 of 6Top 20%
📍 Fresno Street, RI: #2 of 14 inventorsTop 15%
🗺 Rhode Island: #43 of 240 inventorsTop 20%
Overall (1989): #122,945 of 140,708Top 90%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4816591 6,11-dihydrodibenz[b,e]oxepin-acetic acids and derivatives Grover C. Helsley, Arthur R. McFadden 1989-03-28