DF

David A. Freas

📍 Mifflinville, PA: #1 of 1 inventorsTop 100%
🗺 Pennsylvania: #43,221 of 74,527 inventorsTop 60%
Overall (All Time): #3,864,278 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5166681 Passive vehicle presence detection system H. Werner Bottesch 1992-11-24