DH

Don M. Hannegan

WE Weatherford/Lamb: 1 patents #31 of 108Top 30%
📍 Barling, AR: #2 of 9 inventorsTop 25%
🗺 Arkansas: #47 of 292 inventorsTop 20%
Overall (2002): #228,192 of 266,432Top 90%
1
Patents 2002

Issued Patents 2002

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6470975 Internal riser rotating control head Darryl A. Bourgoyne 2002-10-29