DH

Derrick Heyl

HE Hein-Werner: 1 patents #3 of 8Top 40%
📍 Wadena, MN: #1 of 3 inventorsTop 35%
🗺 Minnesota: #695 of 2,841 inventorsTop 25%
Overall (1994): #142,856 of 165,921Top 90%
1
Patents 1994

Issued Patents 1994

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5337521 Valve grinder David M. Terpstra 1994-08-16