Douglas R. North

UN Unknown: 1 patents #29,356 of 83,584Top 40%

📍 Clarklake, MI: #8 of 15 inventorsTop 55%

🗺 Michigan: #49,615 of 86,293 inventorsTop 60%

Overall (All Time): #3,741,875 of 4,157,543Top 95%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
D369394	Golf club putter handle and shaft	—	1996-04-30