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Filing date
Publication date
Application filed by Cernik Jiri, Vencl Lubomir, Ladislav Trubac, Josef LebduskafiledCriticalCernik Jiri
Priority to CS887830ApriorityCriticalpatent/CS271932B1/en
Publication of CS783088A1publicationCriticalpatent/CS783088A1/en
Publication of CS271932B1publicationCriticalpatent/CS271932B1/en