SG

Stephan S. Groffman

AP Amchem Products: 1 patents #31 of 57Top 55%
📍 Philadelphia, PA: #2,553 of 4,834 inventorsTop 55%
🗺 Pennsylvania: #43,221 of 74,527 inventorsTop 60%
Overall (All Time): #4,052,388 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4386121 Spray process for chemical nickel plating Newton W. McCready 1983-05-31