SD

Santo A. DeFrancesco

US Union Switch & Signal: 1 patents #25 of 78Top 35%
📍 Baldwin, PA: #42 of 66 inventorsTop 65%
🗺 Pennsylvania: #43,221 of 74,527 inventorsTop 60%
Overall (All Time): #3,724,118 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5664744 Railway highway crossing signal James P. Chew, Richard S. Jones 1997-09-09