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Robert J. Sperzel

Surheim, OH: #1 of 1 inventorsTop 100%
Overall (2003): #127,762 of 273,478Top 50%
1 Patents 2003

Issued Patents 2003

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6608248 Device for tuning a string of a musical instrument 2003-08-19