JH

James Helmick

📍 Estherville, IA: #9 of 22 inventorsTop 45%
🗺 Iowa: #8,735 of 15,303 inventorsTop 60%
Overall (All Time): #4,022,295 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4544176 Tractor mounted hydraulic control mechanism for an earth working tool — 1985-10-01