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Application filed by Burysek Frantisek, Kolar Ladislav, Ptacek JaroslavfiledCriticalBurysek Frantisek
Priority to CS877747ApriorityCriticalpatent/CS263729B1/en
Publication of CS774787A1publicationCriticalpatent/CS774787A1/en
Publication of CS263729B1publicationCriticalpatent/CS263729B1/en