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 Н.Х. ЛевинаfiledCriticalН.Х. Левина
Priority to SU0061ApriorityCriticalpatent/SU71713A1/en
Application grantedgrantedCritical
Publication of SU71713A1publicationCriticalpatent/SU71713A1/en