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Application filed by Hudec Jozef, Polievka Milan, Stefan Doc Ing Csc Polacek, Macho Vendelin Prof Ing Dr1ScfiledCriticalHudec Jozef
Priority to CS832997ApriorityCriticalpatent/CS237122B1/en
Publication of CS299783A1publicationCriticalpatent/CS299783A1/en
Publication of CS237122B1publicationCriticalpatent/CS237122B1/en