DC

Douglas Campbell

📍 Derry, PA: #2 of 3 inventorsTop 70%
🗺 Pennsylvania: #570 of 2,652 inventorsTop 25%
Overall (1982): #69,064 of 81,411Top 85%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4342824 Developer with coated carrier material and method of making — 1982-08-03