© 2005 P. Missin - Details

US Patent 3589232

A frequently asked question about the harmonica is why there are numbers above the holes when it is impossible to read these numbers as you play. This patent, awarded in 1971 to Joseph J. Peters of Cranford, New Jersey, provides a solution to that problem. Unlike the other patents in this section, it is not really a harmonica teaching device, but simply an extended mouthpiece that selects one hole at a time and highlights for the player which hole is selected.

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