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Individual
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Individual
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Priority to ES201314ApriorityCriticalpatent/ES201314A1/es
Publication of ES201314A1publicationCriticalpatent/ES201314A1/es
Accessory Devices And Overall Control Thereof
(AREA)
ES201314A1952-01-021952-01-02Un aparato para la impresión de sonidos y su reproducción sonora por medio de un hilo metálico portador acústico
ExpiredES201314A1
(es)
Un sistema eléctrico para captar las señales del aparato telefónico y reproducciones amplificadas en altavoz sin conexión mecánica o eléctrica con dicho aparato