JW

John H. Walker

PP Phillips Petroleum: 1 patents #54 of 170Top 35%
📍 Beatrice, NE: #2 of 10 inventorsTop 20%
🗺 Nebraska: #21 of 171 inventorsTop 15%
Overall (1989): #92,296 of 140,708Top 70%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4832137 Method for protecting a pipe casing from a drill pipe string — 1989-05-23