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
Publication of SU385585A1publicationCriticalpatent/SU385585A1/ru
Priority claimed from SU1755149Aexternal-prioritypatent/SU385585A1/ru
Application filedfiledCritical
Priority to SU1755149ApriorityCriticalpatent/SU385585A1/ru
Application grantedgrantedCritical
Publication of SU385585A2publicationCriticalpatent/SU385585A2/ru