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Application filed by А. В. Зенькович, С. И. тинfiledCriticalА. В. Зенькович
Priority to SU1809378ApriorityCriticalpatent/SU412567A2/ru
Application grantedgrantedCritical
Publication of SU412567A1publicationCriticalpatent/SU412567A1/ru
Publication of SU412567A2publicationCriticalpatent/SU412567A2/ru