DT

David M. Terpstra

HE Hein-Werner: 1 patents #3 of 8Top 40%
📍 Winona, MN: #2 of 14 inventorsTop 15%
🗺 Minnesota: #695 of 2,841 inventorsTop 25%
Overall (1994): #143,649 of 165,921Top 90%
1
Patents 1994

Issued Patents 1994

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5337521 Valve grinder Derrick Heyl 1994-08-16