OS

Otto H. Sievers

📍 Storm Lake, IA: #14 of 22 inventorsTop 65%
🗺 Iowa: #8,735 of 15,303 inventorsTop 60%
Overall (All Time): #4,003,647 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4617956 Control means for ground hydrants — 1986-10-21