WC

William Clayton

EC Excello Co.: 1 patents #2 of 10Top 20%
📍 O'Fallon, IL: #1 of 2 inventorsTop 50%
🗺 Illinois: #802 of 3,813 inventorsTop 25%
Overall (1989): #44,592 of 140,708Top 35%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4814573 Electrical discharge machining apparatus with exchangeable electrode refeed cartridge John M. Check, Frederick L. Fitts, Thomas Walser 1989-03-21