JH

John Hiemstra

DC Donaldson Company: 1 patents #19 of 75Top 30%
📍 Lakeville, MN: #12 of 44 inventorsTop 30%
🗺 Minnesota: #1,346 of 4,549 inventorsTop 30%
Overall (2002): #187,988 of 266,432Top 75%
1
Patents 2002

Issued Patents 2002

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6354398 Mufflers for use with engine retarders; and methods Theodore G. Angelo, John Edward Hamrin, Eivind Stenersen, Wayne M. Wagner, Ted J. Wiegandt 2002-03-12