LR

Louis E. Roper

PP Phillips Petroleum: 2 patents #574 of 1,401Top 45%
Overall (All Time): #2,373,553 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4209409 Drilling fluid additives John W. Forster 1980-06-24
4205724 Well treating compositions Billy L. Swanson 1980-06-03