DD

Donald F. Duncan

PL Playmaxx: 1 patents #3 of 3Top 100%
📍 Tucson, AZ: #3,393 of 6,004 inventorsTop 60%
🗺 Arizona: #18,403 of 32,909 inventorsTop 60%
Overall (All Time): #3,687,846 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5769686 Yo-yo having an improved axle and insert retainer Thomas J. Van Dan Elzen 1998-06-23