WT

William E. Thornberry

PP Phillips Petroleum: 2 patents #574 of 1,401Top 45%
Overall (All Time): #2,359,866 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4475883 Pressure control for steam generator Robert M. Schirmer 1984-10-09
4211013 Gauge Clarence R. Bresson 1980-07-08