WP

William H. Pettyjohn

CE Combustion Engineering: 1 patents #13 of 79Top 20%
📍 Chattanooga, TN: #3 of 31 inventorsTop 10%
🗺 Tennessee: #86 of 493 inventorsTop 20%
Overall (1982): #23,424 of 81,411Top 30%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4327526 Apparatus for grinding the internal walls of pipes John Lewis, William E. Milligan, deceased 1982-05-04