John Dopyera (Slovak: Ján Dopjera; 1893–1988) was a Slovak-American inventor and entrepreneur, and a maker of stringed instruments. His inventions include...

immigrant John Dopyera, instrument repairman and inventor, and musician George Beauchamp were searching for more volume for Beauchamp's guitars. Dopyera built...

phonograph-like amplifying horn. He approached inventor and violin-maker John Dopyera, who made a prototype that was, by all accounts, a failure. Their next...

steel guitar player and house painter, and inventor John Dopyera, a violinist and luthier. Dopyera had seen an amplified Stroh stick violin nearby[clarification...

Finger Pick was patented on July 20, 1928, by George Beauchamps and John Dopyera. Most fingerpicks are composed of metal or plastic (usually Celluloid...

sound holes. Cutaway body styles may truncate or omit the lower f-hole. John Dopyera, responding to a request by the steel guitar player George Beauchamp...

parents were Rusins from Slovak part of Czechoslovakia John Dopyera – inventor, entrepreneur John D. Hertz – businessman, thoroughbred racehorse owner and...

who collaborated with violin repairman John Dopyera to attempt to build a steel guitar that was louder. Dopyera and Beauchamp developed a non-electric...

home to learn more. The shop was owned by a violin repairman named John Dopyera. Dopyera and his brother Rudy, showed Beauchamp a prototype of theirs which...

of the bionic arm and pioneer in thermodynamics; and, more recently, John Dopyera, father of modern acoustic string instruments. Hungarian inventors Joseph...