DU

Donald V. Umphries

📍 New Iberia, LA: #1 of 7 inventorsTop 15%
🗺 Louisiana: #42 of 573 inventorsTop 8%
Overall (1994): #35,064 of 165,921Top 25%
2
Patents 1994

Issued Patents 1994

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5323684 Downhole charge carrier 1994-06-28
5295544 Decentralized casing hole puncher 1994-03-22