Рижский Ордена Трудового Красного Знамени Политехнический Институт
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Рижский Ордена Трудового Красного Знамени Политехнический ИнститутfiledCriticalРижский Ордена Трудового Красного Знамени Политехнический Институт
Priority to SU772546585ApriorityCriticalpatent/SU673435A1/en
Application grantedgrantedCritical
Publication of SU673435A1publicationCriticalpatent/SU673435A1/en