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William M. Roberts

SI Smith International: 3 patents #9 of 94Top 10%
📍 Houston, TX: #105 of 1,583 inventorsTop 7%
🗺 Texas: #955 of 11,512 inventorsTop 9%
Overall (2011): #32,382 of 364,097Top 9%
3
Patents 2011

Issued Patents 2011

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
8074718 Ball seat sub 2011-12-13
8047280 Drillable bridge plug Lap Tran, Piro Shkurti, George J. Melenyzer 2011-11-01
7980300 Drillable bridge plug James A. Simson, George J. Melenyzer 2011-07-19