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Application filed by Le Proizu Elmash Str Ob ElektrfiledCriticalLe Proizu Elmash Str Ob Elektr
Priority to SU4850178priorityCriticalpatent/RU1821872C/en
Application grantedgrantedCritical
Publication of RU1821872CpublicationCriticalpatent/RU1821872C/en