SF

Stephen F. Fields

GT General American Transportation: 1 patents #3 of 12Top 25%
📍 Wilmette, IL: #302 of 495 inventorsTop 65%
🗺 Illinois: #48,934 of 84,256 inventorsTop 60%
Overall (All Time): #3,994,995 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4586547 Ball valve purge device for tank cars C. K. Krishnakumar 1986-05-06