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"FILTRO PERFECCIONADO", caracterizado por disponer de dos superficies cilíndricas montadas concéntricas sobre sí y perforadas ambas por orificios cuyos diámetros y espacios intermedios dependen del grado de fluidez e impureza del líquido a tratar, tapadas sus bases superior e inferior mediante la aplicación de dos coronas circulares ciegas del mismo material inalterable a la acción de los productos a filtrar.