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Application filed by Frantisek Uher, Frantisek Smital, Josef ChromyfiledCriticalFrantisek Uher
Priority to CS877178ApriorityCriticalpatent/CS263105B1/en
Publication of CS717887A1publicationCriticalpatent/CS717887A1/en
Publication of CS263105B1publicationCriticalpatent/CS263105B1/en