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Mecanismo sonoro para juguetes, caracterizado por que está constituido por un motor eléctrico de eje vertical prolongado en ambos sentidos, que con una de las prolongaciones mueve un molinillo-ventilador que lanza el aire que hace sonar un pito, que imita una sirena, cuyo sonido es reforzado por una caja de resonancia, con compartimientos de distintos tamaños pava diferentes sonoridades.
ES0089543U1961-10-261961-10-26Mecanismo sonoro para juguetes
PendingES89543U
(es)