DD

Donald E. Duckworth

CE Cummins Engine: 1 patents #304 of 765Top 40%
Overall (All Time): #3,813,066 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5372114 Dampened pressure regulating and load cell tappet Gary L. Gant, P. Douglas Free, James R. Katzenmeyer, George L. Muntean 1994-12-13