DD

Donald L. Duckworth

📍 Roanoke, VA: #234 of 603 inventorsTop 40%
🗺 Virginia: #12,642 of 34,511 inventorsTop 40%
Overall (All Time): #2,268,586 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5609416 Portable continual mixer 1997-03-11
5470147 Portable continual mixer 1995-11-28