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Publication date
Application filed by Ladislav Trubac, Josef LebduskafiledCriticalLadislav Trubac
Priority to CS89582ApriorityCriticalpatent/CS272032B1/en
Publication of CS58289A1publicationCriticalpatent/CS58289A1/en
Publication of CS272032B1publicationCriticalpatent/CS272032B1/en