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Application filed by М.Л. Полянский, нский М.Л. ПолfiledCriticalМ.Л. Полянский
Priority to SU380535ApriorityCriticalpatent/SU74223A1/en
Application grantedgrantedCritical
Publication of SU74223A1publicationCriticalpatent/SU74223A1/en