Philip R. Ballard

📍 Springfield, MA: #3 of 15 inventorsTop 20%

🗺 Massachusetts: #1,083 of 4,501 inventorsTop 25%

Overall (1997): #93,148 of 185,788Top 55%

Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
5702102	Score board for dart game	—	1997-12-30