DR

David L. Ragsdill

📍 Arlington, TX: #941 of 1,708 inventorsTop 60%
🗺 Texas: #73,555 of 125,132 inventorsTop 60%
Overall (All Time): #4,099,775 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4298572 Mud logging system John N. Moffet, John D. Moffet 1981-11-03