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Application filed by Vladimir K Lipskij, German S Rysev, Igor N TroickijfiledCriticalVladimir K Lipskij
Priority to CS831423ApriorityCriticalpatent/CS246582B1/cs
Publication of CS142383A1publicationCriticalpatent/CS142383A1/cs
Publication of CS246582B1publicationCriticalpatent/CS246582B1/cs