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January 3, 1988 (aged 94) Grants Pass, Oregon, U.S. Occupation (s) inventor and entrepreneur. Years active. 1926–1988. John Dopyera (Slovak: Ján Dopjera; 1893–1988) 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 ...
Dobro is an American brand of resonator guitars owned by Gibson and manufactured by its subsidiary Epiphone. The term "dobro" is also used as a generic term for any wood-bodied, single-cone resonator guitar. The Dobro was originally a guitar manufacturing company founded by the Dopyera brothers with the name "Dobro Manufacturing Company".
Resonator guitar. A resonator guitar or resophonic guitar (often erroneously called a "Dobro" [1]) is an acoustic guitar that produces sound by conducting string vibrations through the bridge to one or more spun metal cones (resonators), instead of to the guitar's sounding board (top). Resonator guitars were originally designed to be louder ...
The National String Instrument Corporation was an American guitar company first formed to manufacture banjos and then the original resonator guitars. National also produced resonator ukuleles and resonator mandolins. The company merged with Dobro to form the "National Dobro Company", then becoming a brand of Valco until it closed in 1968.
Dissatisfaction with what John Dopyera felt was mismanagement led him to resign from National in January 1929. He subsequently formed the Dobro Manufacturing Corporation, later called Dobro Corporation, Ltd, and began to manufacture his own line of resonator-equipped instruments . Patent infringement disagreements between National and Dobro led ...
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A resonator ukulele or "resophonic ukulele" is a ukulele whose sound is produced by one or more spun aluminum cones (resonators) instead of the wooden soundboard (ukulele top/face). These instruments are sometimes referred to as " Dobro ukuleles," however the term "Dobro" is currently trademarked by the Gibson Guitar Corporation.
Resonator mandolin. A resonator mandolin or "resophonic mandolin" is a mandolin whose sound is produced by one or more metal cones (resonators) instead of the customary wooden soundboard (mandolin top/face). These instruments are sometimes referred to as " Dobro mandolins," after pioneering instruments designed and produced by the Dopyera ...