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 А-3959filedCriticalПредприятие П/Я А-3959
Priority to SU782581820ApriorityCriticalpatent/SU670405A1/ru
Application grantedgrantedCritical
Publication of SU670405A1publicationCriticalpatent/SU670405A1/ru