Roger O. Durham

📍 Glendale, CA: #4 of 34 inventorsTop 15%

🗺 California: #2,144 of 10,592 inventorsTop 25%

Overall (1989): #63,758 of 140,708Top 50%

Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4840084	Freewheel mechanism for bicycles	—	1989-06-20