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Application filed by Zdenek Ing Kapucian, Vaclav PeskafiledCriticalZdenek Ing Kapucian
Priority to CS842524ApriorityCriticalpatent/CS239466B1/en
Publication of CS252484A1publicationCriticalpatent/CS252484A1/en
Publication of CS239466B1publicationCriticalpatent/CS239466B1/en