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 Авторы БИБЛИОг, А. Г. Шипицын , В. К. СоинfiledCriticalАвторы БИБЛИОг
Priority to SU1607357ApriorityCriticalpatent/SU389233A1/ru
Application grantedgrantedCritical
Publication of SU389233A1publicationCriticalpatent/SU389233A1/ru