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Category:Piano accordion

NOTE: "Acordeón Reuther" was merely one of the accordion brands, and John H. Reuther's inventions used on it were not about the normal piano accordion, but about the Reuther uniform keyboard system (U.S. Patent 2,203,393) and the dual-row piano keyboard (U.S. Patent 2,557,690) for accordions.

Media in category "Piano accordion"

The following 20 files are in this category, out of 20 total.