EB

Ervin H. Black

📍 Berwyn, IL: #57 of 152 inventorsTop 40%
🗺 Illinois: #34,584 of 84,256 inventorsTop 45%
Overall (All Time): #2,224,309 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6203421 Safety ceiling vent — 2001-03-20
4505079 Thermal window shield — 1985-03-19