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Application filed by Sp Kt B Izolyatoram Armature VfiledCriticalSp Kt B Izolyatoram Armature V
Priority to SU904810468ApriorityCriticalpatent/RU1769238C/en
Application grantedgrantedCritical
Publication of RU1769238CpublicationCriticalpatent/RU1769238C/en