DR

Douglas D. Riis

📍 Marion, IA: #206 of 453 inventorsTop 50%
🗺 Iowa: #6,094 of 15,303 inventorsTop 40%
Overall (All Time): #2,363,085 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
D271128 Reel for a fishing rod — 1983-10-25
D269797 Ice fishing rod — 1983-07-19