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Application filed by Г.Ф. ВолобоевfiledCriticalГ.Ф. Волобоев
Priority to SU2381468/06ApriorityCriticalpatent/SU692300A1/en
Application grantedgrantedCritical
Publication of RU692300CpublicationCriticalpatent/RU692300C/en
Publication of SU692300A1publicationCriticalpatent/SU692300A1/en