JH

Jim C. Helfrich

📍 Great Falls, MT: #17 of 104 inventorsTop 20%
🗺 Montana: #987 of 3,198 inventorsTop 35%
Overall (All Time): #2,134,205 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
7521816 Water current powered motor 2009-04-21
5779541 Combine yield monitor 1998-07-14