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Application filed by Б.Х. Каминский, Х.Л.И. РабкинfiledCriticalБ.Х. Каминский
Priority to SU68077ApriorityCriticalpatent/SU28935A1/ru
Application grantedgrantedCritical
Publication of SU28935A1publicationCriticalpatent/SU28935A1/ru