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 Предприятие П/Я В-2769filedCriticalПредприятие П/Я В-2769
Priority to SU772464348ApriorityCriticalpatent/SU681321A1/en
Application grantedgrantedCritical
Publication of SU681321A1publicationCriticalpatent/SU681321A1/en