AC

Alfred C. Christoffer

📍 Barrington, IL: #314 of 767 inventorsTop 45%
🗺 Illinois: #34,584 of 84,256 inventorsTop 45%
Overall (All Time): #2,020,045 of 4,157,543Top 50%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
8925904 Metal safety rail for open floors of a building under construction Steve M. Stawychny 2015-01-06
8424851 Metal safety rail for open floors of a building under construction Steve M. Stawychny 2013-04-23