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Application filed by Otakar Mudr Hokynar, Alena HokynarovafiledCriticalOtakar Mudr Hokynar
Priority to CS84915ApriorityCriticalpatent/CS243653B1/en
Publication of CS91584A1publicationCriticalpatent/CS91584A1/en
Publication of CS243653B1publicationCriticalpatent/CS243653B1/en