RH

Robert W. Heh

📍 Pittsburgh, PA: #60 of 296 inventorsTop 25%
🗺 Pennsylvania: #852 of 3,759 inventorsTop 25%
Overall (1989): #36,428 of 140,708Top 30%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4858521 Radon gas home/building mitigation apparatus and method — 1989-08-22