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Application filed by Burysek Frantisek, Jezek Jan, Pavel AndrlikfiledCriticalBurysek Frantisek
Priority to CS876914ApriorityCriticalpatent/CS263347B1/en
Publication of CS691487A1publicationCriticalpatent/CS691487A1/en
Publication of CS263347B1publicationCriticalpatent/CS263347B1/en