DD

David William Dartford

NV National Oilwell Varco: 1 patents #240 of 551Top 45%
📍 Houston, TX: #12,319 of 21,073 inventorsTop 60%
🗺 Texas: #73,555 of 125,132 inventorsTop 60%
Overall (All Time): #3,297,522 of 4,157,543Top 80%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
7766580 Energy managing keel joint Timothy Steven Williams, George Tisdale 2010-08-03