RR

Robert R. Ridley

EC Excello Co.: 2 patents #45 of 216Top 25%
Overall (All Time): #2,360,381 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4485657 Tooth forming tool and method for splining tubular elements Paul Fitzpatrick 1984-12-04
4414729 Tool and method for crowning teeth 1983-11-15