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Application filed by Boris G Karnauchov, Georgij K Mirzoev, Georgij D Kostov, Sofija G KostovafiledCriticalBoris G Karnauchov
Priority to CS811390ApriorityCriticalpatent/CS246556B1/en
Publication of CS139081A1publicationCriticalpatent/CS139081A1/en
Publication of CS246556B1publicationCriticalpatent/CS246556B1/en