RD

Robert O. Duff

📍 Apple Valley, MN: #20 of 57 inventorsTop 40%
🗺 Minnesota: #2,461 of 6,786 inventorsTop 40%
Overall (2016): #249,994 of 481,213Top 55%
1
Patents 2016

Issued Patents 2016

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9284765 Combination doorbumper/doorstopper — 2016-03-15