Ralph Andrew Ferris

📍 Girard, PA: #3 of 7 inventorsTop 45%

🗺 Pennsylvania: #1,491 of 5,394 inventorsTop 30%

Overall (2003): #138,487 of 273,478Top 55%

Patents 2003

Issued Patents 2003

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
6662664	Electronic pressure sensing device	—	2003-12-16