"1988Z"^^ . "J\u00E1n Dopjera"@en . . "Slovak inventor" . . . . . "1893Z"^^ . . "Dopyera, John"@en . "1988Z"^^ . "1926Z"^^ . "John Dopyera (born J\u00E1n Dopjera; 1893\u20131988) was a Slovak-American inventor and entrepreneur, and a maker of stringed instruments. His inventions include the resonator guitar and important contributions in the early development of the electric guitar."@en . . . .