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Individual
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Individual
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Priority to ES0047034UpriorityCriticalpatent/ES47034U/es
Publication of ES47034UpublicationCriticalpatent/ES47034U/es
Nuevo silbato, cuya boquilla donde lleva el elemento sonoro, se caracteriza por que desemboca tangencialmente en un canal circular cuya sección es en "U" con sus extremos rebatidos hacia adentro constituyendo entre los mismos una ranura que se halla en la parte interna.