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Priority to ES138365ApriorityCriticalpatent/ES138365A1/es
Publication of ES138365A1publicationCriticalpatent/ES138365A1/es
ES138365A1935-05-231935-05-23Un nuevo procedimiento para la fabricación de aglomerado de carbón, destinado a usos domésticos e industriales.
ExpiredES138365A1
(es)