DF

David R. Freriks

📍 Hinckley, IL: #8 of 15 inventorsTop 55%
🗺 Illinois: #48,934 of 84,256 inventorsTop 60%
Overall (All Time): #3,437,104 of 4,157,543Top 85%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
7152600 Biohazard mask suitable for civilians Leonard F. Czuba 2006-12-26