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Application filed by Michal Ing Drobny, Karel Ing Sanda, Pavel Ing Svonavec, Polievka Milan, Macho VendelinfiledCriticalMichal Ing Drobny
Priority to CS83287ApriorityCriticalpatent/CS231794B1/en
Publication of CS28783A1publicationCriticalpatent/CS28783A1/en
Publication of CS231794B1publicationCriticalpatent/CS231794B1/en