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PETRONI LUIGI
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PETRONI LUIGI
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Publication of ES307155A1publicationCriticalpatent/ES307155A1/es
Mecanismo para la conversion de un movimiento de rotacion uniforme en otro movimiento de rotacion uniforme con cambio periodico y brusco del sentido de giro.
Perfeccionamientos en dispositivos de fijacion de una seriede numeros el mas elevado de los cuales comprende al menos una cifra, que no sea su primer cifra, diferente de nueve o cero.