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Application filed by В. П. Ватага, А. Я. Оксенбейн , Г. В. Берченко, Таджикский политехнический институтfiledCriticalВ. П. Ватага, А. Я. Оксенбейн , Г. В. Берченко
Priority to SU1785659ApriorityCriticalpatent/SU425757A1/ru
Application grantedgrantedCritical
Publication of SU425757A1publicationCriticalpatent/SU425757A1/ru