DR

Donald K. Ratcliffe

📍 Solon, OH: #341 of 517 inventorsTop 70%
🗺 Ohio: #42,657 of 73,341 inventorsTop 60%
Overall (All Time): #3,771,037 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5416795 Quick change crucible for vacuum melting furnace John A. Kaniuk, Crispino DiRuggiero 1995-05-16