JD

John Howard Dumbolton

📍 Williston, ND: #29 of 64 inventorsTop 50%
🗺 North Dakota: #1,185 of 2,395 inventorsTop 50%
Overall (All Time): #3,534,966 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6342190 Process for increasing recovery of precious metals in an ore processing operation Brian Cannon Dumbolton 2002-01-29