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Application filed by Bobovnicky Jozef, Novotny Kazimir, Ctibor Ing BeganfiledCriticalBobovnicky Jozef
Priority to CS87521ApriorityCriticalpatent/CS258697B1/en
Publication of CS52187A1publicationCriticalpatent/CS52187A1/en
Publication of CS258697B1publicationCriticalpatent/CS258697B1/en