DW

Donald E. Winterfeld

📍 Sioux Center, IA: #19 of 32 inventorsTop 60%
🗺 Iowa: #8,735 of 15,303 inventorsTop 60%
Overall (All Time): #3,920,068 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4801917 Turn signal apparatus — 1989-01-31