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Application filed by Vach Vladimir, Bures Jiri, Otakar Dipl Tech Hruska, Stulc VaclavfiledCriticalVach Vladimir
Priority to CS874929ApriorityCriticalpatent/CS265953B1/en
Publication of CS492987A1publicationCriticalpatent/CS492987A1/en
Publication of CS265953B1publicationCriticalpatent/CS265953B1/en