RA

Roger J. Ackerman

📍 Sibley, IA: #10 of 20 inventorsTop 50%
🗺 Iowa: #8,735 of 15,303 inventorsTop 60%
Overall (All Time): #3,485,219 of 4,157,543Top 85%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6766865 Rotary soil probe John H. Dagel, Matt B. Hesse 2004-07-27