RD

Robert O. Duff

📍 Apple Valley, MN: #23 of 61 inventorsTop 40%
🗺 Minnesota: #1,999 of 5,843 inventorsTop 35%
Overall (2011): #182,520 of 364,097Top 55%
1
Patents 2011

Issued Patents 2011

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
7976080 Doorstop with releasably securable handle — 2011-07-12