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Application filed by L M Kepersha, P F Badenkov, G I Shvets, V I Gusev, V A IonovfiledCriticalL M Kepersha
Priority to SU630824933ApriorityCriticalpatent/SU228931A1/en
Application grantedgrantedCritical
Publication of SU228931A1publicationCriticalpatent/SU228931A1/en