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Application filed by Pospisil Petr, Jiri Mazel, Rudolf Busek, Josef Busik, Zdenek MikulafiledCriticalPospisil Petr
Priority to CS873131ApriorityCriticalpatent/CS261196B1/en
Publication of CS313187A1publicationCriticalpatent/CS313187A1/en
Publication of CS261196B1publicationCriticalpatent/CS261196B1/en