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 Ф.Г. ПрохоровfiledCriticalФ.Г. Прохоров
Priority to SU362ApriorityCriticalpatent/SU66312A1/ru
Application grantedgrantedCritical
Publication of SU66312A1publicationCriticalpatent/SU66312A1/ru