DD

David Duguid

WE Weatherford/Lamb: 1 patents #476 of 852Top 60%
Overall (All Time): #3,541,641 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6374918 In-tubing wellbore sidetracking operations John D. Roberts, James R. Longbottom, David M. Haugen, Alex Dawson, Frank Middleton +2 more 2002-04-23