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and from which he sold small electric motors, generators, fans, and later automobile ignition systems. The Unisparker Ignition systems became the automobile industry standard for almost 50 years, until the advent of the high energy ignition (HEI) systems.In 1921, Kent produced his first radio components, selling the do-it-yourself kits consisting of "breadboards" that could be assembled by early radio enthusiasts. The same year, he introduced the Model 5, primarily

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