JD

John Howard Dumbolton

📍 Williston, ND: #1 of 2 inventorsTop 50%
🗺 North Dakota: #39 of 144 inventorsTop 30%
Overall (2002): #77,996 of 266,432Top 30%
1
Patents 2002

Issued Patents 2002

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