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 Б.Л. КрепсfiledCriticalБ.Л. Крепс
Priority to SU995124ApriorityCriticalpatent/SU46355A1/ru
Application grantedgrantedCritical
Publication of SU46355A1publicationCriticalpatent/SU46355A1/ru