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Calvin H. Hansen

📍 Sioux Falls, SD: #3 of 15 inventorsTop 20%
🗺 South Dakota: #8 of 62 inventorsTop 15%
Overall (1989): #127,493 of 140,708Top 95%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4833797 Trencher attachment Leslie J. Slunecka, Leroy B. Stumpe 1989-05-30