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Application filed by Я.Л. Гольдфарб, М.М. КацнельсонfiledCriticalЯ.Л. Гольдфарб
Priority to SU150575ApriorityCriticalpatent/SU40360A1/ru
Application grantedgrantedCritical
Publication of SU40360A1publicationCriticalpatent/SU40360A1/ru