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Application filed by В.Я. СавченкоfiledCriticalВ.Я. Савченко
Priority to SU2490027/06ApriorityCriticalpatent/RU671456C/ru
Priority claimed from SU2490027/06Aexternal-prioritypatent/RU671456C/ru
Application grantedgrantedCritical
Publication of SU671456A1publicationCriticalpatent/SU671456A1/ru
Publication of RU671456CpublicationCriticalpatent/RU671456C/ru