DD

David Trevor Darnell

CI Clearwater International: 1 patents #35 of 62Top 60%
WL Weatherford U.K. Limited: 1 patents #19 of 47Top 45%
WE Weatherford/Lamb: 1 patents #476 of 852Top 60%
📍 Yarmouth, GB: #3 of 5 inventorsTop 60%
Overall (All Time): #1,531,145 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
8732934 Connector 2014-05-27
8028755 Quick lock wireline valve/blow-out preventor and methods for making and using same Robert Andrew Hunt 2011-10-04
7299872 Hydraulic-mechanical jar tool 2007-11-27