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Application filed by Jezek Josef, Vaclav Ing Navara, Frantisek NovakfiledCriticalJezek Josef
Priority to CS859784ApriorityCriticalpatent/CS256265B1/en
Publication of CS978485A1publicationCriticalpatent/CS978485A1/en
Publication of CS256265B1publicationCriticalpatent/CS256265B1/en