Roy A. Fetterman, Jr.

📍 Fort Washington, PA: #3 of 16 inventorsTop 20%

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

Overall (2003): #131,428 of 273,478Top 50%

Patents 2003

Issued Patents 2003

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
6543474	Pressure equalizing check valve	—	2003-04-08