DU

Donald V. Umphries

OL Owen Oil Tools Lp: 1 patents #30 of 64Top 50%
📍 New Iberia, LA: #24 of 168 inventorsTop 15%
🗺 Louisiana: #1,700 of 10,876 inventorsTop 20%
Overall (All Time): #1,278,386 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
6014933 Downhole charge carrier Harold D. Owen, Bobby R. Ford, David S. Wesson 2000-01-18
5323684 Downhole charge carrier 1994-06-28
5295544 Decentralized casing hole puncher 1994-03-22
5111885 Decentralized casing hole puncher 1992-05-12