JT

Jeffrey J. Theisen

DC Donaldson Company: 3 patents #297 of 695Top 45%
📍 Prior Lake, MN: #168 of 425 inventorsTop 40%
🗺 Minnesota: #19,064 of 52,454 inventorsTop 40%
Overall (All Time): #1,541,585 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
8425769 Filter arrangement and methods Gary H. Gift 2013-04-23
5885447 Liquid filtration system incorporating a bypass filter element Kathryn A. Legault 1999-03-23
5501791 Pressure isolation valve and bypass valve; and filter head assembly incorporating same John F. Connelly 1996-03-26