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Priority to PL15533572ApriorityCriticalpatent/PL75535B2/pl
Publication of PL75535B2publicationCriticalpatent/PL75535B2/pl
"mejoras introducidas en el objeto de la patente principal num. 497.594(4), por: "dispositivo de salida de un recipiente para material a granel, en forma de polvo o grano".