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LLOBERA BORRAS JUAN
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LLOBERA BORRAS JUAN
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Application filed by LLOBERA BORRAS JUANfiledCriticalLLOBERA BORRAS JUAN
Priority to ES0238634ApriorityCriticalpatent/ES238634A1/es
Publication of ES238634A1publicationCriticalpatent/ES238634A1/es
Perfeccionamientos introducidos en la construcción de aparatos tocadiscos, caracterizados porque en la periferia del plato portadiscos se graban dos series de muescas que constituyen un dispositivo estroboscópico que permite comprobar si su velocidad de giro se ajusta exactamente a la requerida por la grabación que se escucha.
ES0238634A1957-11-081957-11-08" perfeccionamientos introducidos en la construcciën de aparatos tocadiscos"
ExpiredES238634A1
(es)