Douglas L. Hawn

📍 Piedmont, SD: #3 of 8 inventorsTop 40%

🗺 South Dakota: #1,077 of 2,308 inventorsTop 50%

Overall (All Time): #3,935,163 of 4,157,543Top 95%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4856799	Snowmobile tow bar apparatus	—	1989-08-15