Roy A. Fetterman, Jr.

📍 Fort Washington, PA: #68 of 112 inventorsTop 65%

🗺 Pennsylvania: #43,221 of 74,527 inventorsTop 60%

Overall (All Time): #3,507,374 of 4,157,543Top 85%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

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