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Application filed by Belunek Bohumir, Sava KubinfiledCriticalBelunek Bohumir
Priority to CS886552ApriorityCriticalpatent/CS269429B1/en
Publication of CS655288A1publicationCriticalpatent/CS655288A1/en
Publication of CS269429B1publicationCriticalpatent/CS269429B1/en