RH

Raymond C. Hartzell

📍 Defiance, OH: #25 of 68 inventorsTop 40%
🗺 Ohio: #42,657 of 73,341 inventorsTop 60%
Overall (All Time): #3,469,277 of 4,157,543Top 85%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6688148 Manufacturing process for making engine components of high carbon content steel using cold forming techniques Jeffrey A. Buck, Stanley Marchewka 2004-02-10