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Application filed by Karel Bajak, Milan Zenozicka, Balcarek JaroslavfiledCriticalKarel Bajak
Priority to CS886751ApriorityCriticalpatent/CS270488B1/en
Publication of CS675188A1publicationCriticalpatent/CS675188A1/en
Publication of CS270488B1publicationCriticalpatent/CS270488B1/en