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Priority to ES1978236867UpriorityCriticalpatent/ES236867U/es
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Hoja portamicrofilms perfeccionada, caracterizada esencialmente por estar compuesta de dos planchas, la superior de menor espesor que la inferior, transparentes, de material plástico que estan superpuestas y electrosoldadas, configuran las soldaduras líneas paralelas de separación interlíneas adecuada a esta aplicación, delimitando una serie de bandas de características similares.