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Application filed by Lelko Jozef, Jan Ing Ferentik, Berezny Viktor, Lichvar Milan, Frantisek Ing Broz, Jan Ing OlesarfiledCriticalLelko Jozef
Priority to CS858893ApriorityCriticalpatent/CS257459B1/en
Publication of CS889385A1publicationCriticalpatent/CS889385A1/en
Publication of CS257459B1publicationCriticalpatent/CS257459B1/en