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Application filed by Л.Г. Кролик, З.З. МоисееваfiledCriticalЛ.Г. Кролик
Priority to SU389554ApriorityCriticalpatent/SU76549A1/ru
Application grantedgrantedCritical
Publication of SU76549A1publicationCriticalpatent/SU76549A1/ru