DH

Donald B. Hoffman

NS National Steel: 1 patents #1 of 8Top 15%
📍 Florissant, MO: #6 of 31 inventorsTop 20%
🗺 Missouri: #150 of 859 inventorsTop 20%
Overall (1989): #119,541 of 140,708Top 85%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4886247 Ceramic brick retainer band for steel ladle Joseph J. Linhart, Raymond C. Stoces 1989-12-12