Gregory S. Marcum

📍 Rittman, OH: #50 of 88 inventorsTop 60%

🗺 Ohio: #42,657 of 73,341 inventorsTop 60%

Overall (All Time): #3,195,776 of 4,157,543Top 80%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
8112931	Shotgun gas exchanger	Bill R. Yost	2012-02-14