TF

Thomas I. Files

DI Dresser Industries: 1 patents #301 of 787Top 40%
📍 Marion, OH: #63 of 122 inventorsTop 55%
🗺 Ohio: #42,657 of 73,341 inventorsTop 60%
Overall (All Time): #4,097,119 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4290651 Surface mining method Donald H. Beutner 1981-09-22