RS

Ronald R. Spercel

📍 Tiffin, OH: #43 of 128 inventorsTop 35%
🗺 Ohio: #30,338 of 73,341 inventorsTop 45%
Overall (All Time): #2,217,775 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6444886 Musical instrument Robert J. Sperzel 2002-09-03
5962797 Musical instrument Robert J. Sperzel 1999-10-05