DH

David R. Hazen

CC Consolidation Coal: 1 patents #20 of 37Top 55%
📍 McMurray, PA: #86 of 178 inventorsTop 50%
🗺 Pennsylvania: #43,221 of 74,527 inventorsTop 60%
Overall (All Time): #4,052,867 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4387798 Cascading conveyor system Will B. Jamison 1983-06-14