JF

Joseph V. Friel

MC Mine Safety Appliances Company: 1 patents #104 of 243Top 45%
📍 Butler, PA: #185 of 347 inventorsTop 55%
🗺 Pennsylvania: #43,221 of 74,527 inventorsTop 60%
Overall (All Time): #3,987,305 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4713182 Fire-fighting foam Ralph H. Hiltz, John S. Greer 1987-12-15