Charles N. Risley

📍 Milwaukie, OR: #150 of 244 inventorsTop 65%

🗺 Oregon: #17,068 of 28,073 inventorsTop 65%

Overall (All Time): #3,982,832 of 4,157,543Top 100%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4696738	Material separating surface	—	1987-09-29