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Publication date
Application filed by Pospisil Bedrich, Polacek JirifiledCriticalPospisil Bedrich
Priority to CS824057ApriorityCriticalpatent/CS232369B1/en
Publication of CS405782A1publicationCriticalpatent/CS405782A1/en
Publication of CS232369B1publicationCriticalpatent/CS232369B1/en