RS

Richard L. Stein

📍 Pittsburgh, PA: #54 of 319 inventorsTop 20%
🗺 Pennsylvania: #989 of 4,367 inventorsTop 25%
Overall (1997): #87,919 of 185,788Top 50%
1
Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5701893 Disposable face mask John J. Kern, J. Preston Wildrick 1997-12-30