JD

John R. Dupree

WI Warn Industries: 2 patents #47 of 112Top 45%
📍 Portland, OR: #4,612 of 9,213 inventorsTop 55%
🗺 Oregon: #12,654 of 28,073 inventorsTop 50%
Overall (All Time): #2,201,790 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6557660 Hub lock for two-wheel/four-wheel drive vehicle Bryan Averill, Kip E. Clohessy, Fred L. Ewer, Mark J. Fogelberg, Randy C. Karambelas +2 more 2003-05-06
5520272 Combination manual-automatic hub lock Fred L. Ewer, Philip J. Cronin, II 1996-05-28