John G. Feuz

📍 Portland, OR: #4,612 of 9,213 inventorsTop 55%

🗺 Oregon: #12,654 of 28,073 inventorsTop 50%

Overall (All Time): #2,317,717 of 4,157,543Top 60%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
5031661	Double check valve backflow preventer assembly	—	1991-07-16
4893654	Double check valve backflow preventer assembly	—	1990-01-16