DH

David A. Hejl

HS Halliburton Energy Services: 2 patents #57 of 306Top 20%
📍 Houston, TX: #144 of 1,307 inventorsTop 15%
🗺 Texas: #1,050 of 8,731 inventorsTop 15%
Overall (2004): #68,602 of 270,089Top 30%
2
Patents 2004

Issued Patents 2004

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6814139 Gravel packing apparatus having an integrated joint connection and method for use of same Robert W. Crow 2004-11-09
6789624 Apparatus and method for gravel packing an interval of a wellbore Ronald W. McGregor, Robert Crow, Ronald A. Gibson 2004-09-14