Ростовский-на-Дону институт инженеров железнодорожного транспорта
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 Ростовский-на-Дону институт инженеров железнодорожного транспортаfiledCriticalРостовский-на-Дону институт инженеров железнодорожного транспорта
Priority to SU772485326ApriorityCriticalpatent/SU628018A1/ru
Application grantedgrantedCritical
Publication of SU628018A1publicationCriticalpatent/SU628018A1/ru