DH

David Hartwich

HH Harbisonwalker International Holdings: 1 patents #5 of 10Top 50%
📍 Bethel Park, PA: #149 of 258 inventorsTop 60%
🗺 Pennsylvania: #43,221 of 74,527 inventorsTop 60%
Overall (All Time): #2,400,835 of 4,157,543Top 60%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
12263487 Refractory lining design for magnetic separation Joshua Sayre 2025-04-01