CH

Calvin H. Hansen

📍 Sioux Falls, SD: #257 of 532 inventorsTop 50%
🗺 South Dakota: #1,077 of 2,308 inventorsTop 50%
Overall (All Time): #3,928,758 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

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