RS

Roger D. Shaffer

📍 Johnstown, PA: #110 of 214 inventorsTop 55%
🗺 Pennsylvania: #43,221 of 74,527 inventorsTop 60%
Overall (All Time): #3,467,407 of 4,157,543Top 85%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6679372 Quarter displaying and teaching device — 2004-01-20