Robert O. Duff

📍 Apple Valley, MN: #21 of 56 inventorsTop 40%

🗺 Minnesota: #2,568 of 7,004 inventorsTop 40%

Overall (2024): #295,062 of 561,600Top 55%

Patents 2024

Issued Patents 2024

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
12084900	Doorstop with a rope	—	2024-09-10