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Application filed by Vanek Frantisek, Pospisil KarelfiledCriticalVanek Frantisek
Priority to CS847818ApriorityCriticalpatent/CS240298B1/en
Publication of CS781884A1publicationCriticalpatent/CS781884A1/en
Publication of CS240298B1publicationCriticalpatent/CS240298B1/en