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Application filed by Karel Blesik, Miloslav Svanovsky, Josef Smisek, Roman SeptunfiledCriticalKarel Blesik
Priority to CS861469ApriorityCriticalpatent/CS267557B1/en
Publication of CS146986A1publicationCriticalpatent/CS146986A1/en
Publication of CS267557B1publicationCriticalpatent/CS267557B1/en