RK

Robert L. Kopenhaver

CE Certainteed: 1 patents #3 of 4Top 75%
📍 Berwyn, PA: #4 of 8 inventorsTop 50%
🗺 Pennsylvania: #570 of 2,652 inventorsTop 25%
Overall (1982): #34,376 of 81,411Top 45%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4352837 Method of manufacturing roofing shingles having multiple ply appearance — 1982-10-05