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Filing date
Publication date
Application filed by А.Н. БеспалькоfiledCriticalА.Н. Беспалько
Priority to SU1756047/06ApriorityCriticalpatent/RU409533C/en
Priority claimed from SU1756047/06Aexternal-prioritypatent/RU409533C/en
Application grantedgrantedCritical
Publication of SU409533A1publicationCriticalpatent/SU409533A1/en
Publication of RU409533CpublicationCriticalpatent/RU409533C/en