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Priority claimed from HU168487Aexternal-prioritypatent/HU196233B/en
Application filed by Chem EpitoeanyagiparifiledCriticalChem Epitoeanyagipari
Publication of CS659389A2publicationCriticalpatent/CS659389A2/en
Publication of CS274449B2publicationCriticalpatent/CS274449B2/en