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 Московский гидромелиоративный институтfiledCriticalМосковский гидромелиоративный институт
Priority to SU2185609ApriorityCriticalpatent/SU562615A1/ru
Application grantedgrantedCritical
Publication of SU562615A1publicationCriticalpatent/SU562615A1/ru