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Priority claimed from HU871740Aexternal-prioritypatent/HU200165B/en
Application filed by Material Vegyipari KisszovetkefiledCriticalMaterial Vegyipari Kisszovetke
Publication of PL272023A1publicationCriticalpatent/PL272023A1/en
Publication of PL156997B1publicationCriticalpatent/PL156997B1/en