RT

Ronald Trammell

NA National-Oilwell: 1 patents #22 of 58Top 40%
📍 Tomball, TX: #351 of 577 inventorsTop 65%
🗺 Texas: #73,555 of 125,132 inventorsTop 60%
Overall (All Time): #3,580,883 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6227240 Unitized spherical profile check valve with replaceable sealing element Samuel Wu 2001-05-08