Douglas R. Schaffer

📍 Sharonville, OH: #688 of 1,065 inventorsTop 65%

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

Overall (All Time): #3,356,140 of 4,157,543Top 85%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
7373751	Spring-loaded firearm magazine	—	2008-05-20