Douglas J. Laven

📍 Mankato, MN: #2 of 4 inventorsTop 50%

🗺 Minnesota: #407 of 2,022 inventorsTop 25%

Overall (1989): #138,595 of 140,708Top 100%

Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4836823	Heart shaped novelty item	—	1989-06-06