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Application filed by А. Н. Гуржий , Б. Р. Иванов, Киевский Ордена Ленина Политехнический Институт, лети Великой Окт брьской, социалистической революцииfiledCriticalА. Н. Гуржий , Б. Р. Иванов
Priority to SU1735921ApriorityCriticalpatent/SU428290A1/ru
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Publication of SU428290A1publicationCriticalpatent/SU428290A1/ru