WB

William J. Barker

📍 Rapid City, SD: #143 of 295 inventorsTop 50%
🗺 South Dakota: #1,077 of 2,308 inventorsTop 50%
Overall (All Time): #3,077,643 of 4,157,543Top 75%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9175548 Fluid transfer system for an oil drilling rig — 2015-11-03