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Application filed by Zdenek Slachta, Frantisek Ing SvobodafiledCriticalZdenek Slachta
Priority to CS846802ApriorityCriticalpatent/CS244634B1/en
Publication of CS680284A1publicationCriticalpatent/CS680284A1/en
Publication of CS244634B1publicationCriticalpatent/CS244634B1/en