RH

Richard J. Harrington

📍 Roseville, MN: #9 of 27 inventorsTop 35%
🗺 Minnesota: #407 of 2,022 inventorsTop 25%
Overall (1989): #65,987 of 140,708Top 50%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4815244 Concrete block wall insulation system — 1989-03-28