RS

Robert J. Spercel

📍 Cleveland, OH: #3 of 50 inventorsTop 6%
🗺 Ohio: #167 of 2,550 inventorsTop 7%
Overall (1982): #8,220 of 81,411Top 15%
2
Patents 1982

Issued Patents 1982

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
D267410 Guitar string tuning device housing 1982-12-28
4353280 Tuning device 1982-10-12