JR

James C. Rothman

DC Donaldson Company: 2 patents #4 of 20Top 20%
📍 Apple Valley, MN: #4 of 27 inventorsTop 15%
🗺 Minnesota: #240 of 2,841 inventorsTop 9%
Overall (1994): #30,530 of 165,921Top 20%
2
Patents 1994

Issued Patents 1994

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5355973 Muffler with catalytic converter arrangement; and method Wayne M. Wagner, Marty Barris, Douglas E. Flemming, Peter A. Betts 1994-10-18
5293742 Trap apparatus with tubular filter element Gary R. Gillingham, Kelly C. Robertson, Marty Barris, Peter A. Betts, Wayne M. Wagner 1994-03-15