AH

Allen C. Howard

PP Phillips Petroleum: 1 patents #61 of 198Top 35%
📍 Bridge City, TX: #3 of 12 inventorsTop 25%
🗺 Texas: #432 of 2,272 inventorsTop 20%
Overall (1982): #76,971 of 81,411Top 95%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4351817 Carbon black process John E. Slagel 1982-09-28