HB

Harwell E. Benjamin

PP Phillips Petroleum: 1 patents #819 of 1,401Top 60%
📍 Ang Thong, TH: #1 of 1 inventorsTop 100%
Overall (All Time): #4,057,661 of 4,157,543Top 100%
1
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4404178 Apparatus and method for producing carbon black Paul H. Johnson 1983-09-13