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Application filed by В. М. Андрюшин изобретени, Л. Морозов В., А. Трофимов А., А. Холодков Е.filedCriticalВ. М. Андрюшин изобретени
Priority to SU1788243ApriorityCriticalpatent/SU422089A2/ru
Application grantedgrantedCritical
Publication of SU422089A1publicationCriticalpatent/SU422089A1/ru
Publication of SU422089A2publicationCriticalpatent/SU422089A2/ru