DB

David D. Black

CM Chicago Rawhide Manufacturing: 1 patents #13 of 28Top 50%
AS Ab Skf: 1 patents #19 of 70Top 30%
📍 Elgin, IL: #243 of 644 inventorsTop 40%
🗺 Illinois: #34,584 of 84,256 inventorsTop 45%
Overall (All Time): #2,296,843 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5346662 Method of manufacturing a composite seal John B. Wagner 1994-09-13
5183269 Unitized grit seal with removable thrust bumper Anthony W. Vering 1993-02-02