DC

David Chappie

📍 Cohasset, MN: #4 of 14 inventorsTop 30%
🗺 Minnesota: #19,064 of 52,454 inventorsTop 40%
Overall (All Time): #1,530,065 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
8777015 Magnetic separator Martin J. Halverson, Lucas J. Lehtinen 2014-07-15
8708152 Iron ore separation device Lucas J. Lehtinen, Shawn Henriksen, Travis Edward Cunningham, Danilo Bibancos 2014-04-29
8292084 Magnetic separator Martin J. Halverson, Lucas J. Lehtinen 2012-10-23