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 С.Э. РексинfiledCriticalС.Э. Рексин
Priority to SU126831ApriorityCriticalpatent/SU33802A1/en
Application grantedgrantedCritical
Publication of SU33802A1publicationCriticalpatent/SU33802A1/en