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Priority to ES180794ApriorityCriticalpatent/ES180794A1/es
Publication of ES180794A1publicationCriticalpatent/ES180794A1/es
ES180794A1947-12-051947-12-05Mejoras en el procedimiento para la fabricación de aglomerados a base de materiales de procedencia vegetal.
ExpiredES180794A1
(es)