DC

Douglas C. Campbell

📍 Edmonton, CA: #9 of 61 inventorsTop 15%
Overall (1989): #119,899 of 140,708Top 90%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4854384 Pipeline packer — 1989-08-08