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 Р-6896filedCriticalПредприятие П/Я Р-6896
Priority to SU1989721ApriorityCriticalpatent/SU487250A1/en
Application grantedgrantedCritical
Publication of SU487250A1publicationCriticalpatent/SU487250A1/en