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Priority to ES0211878ApriorityCriticalpatent/ES211878A2/es
Publication of ES211878A2publicationCriticalpatent/ES211878A2/es
Mejoras en el objeto de la patente de invención nº 208.713 relativa a un aparato de aire comprimido para regular la respiración que se caracteriza por la existencia de una válvula en el interior de la boquilla terminal del tubo de conducción consistente en una eje varilla protador de una rodela circular sobre cuyo lomo acanalado actuan por fricción los cantos de dos palancas que apretadas con los dientes por el nadador determinan su ascenso o descenso en el interior de una guía en cuya boca obtura o deja libre el paso del aire.
ES0211878A1953-10-271953-10-27UN APARATO DE AIRE COMPRIMIDO PARA REGULAR LA RESPIRACIoN
ExpiredES211878A2
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