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 Irina P Stepanova, Vladimir A Sichanov, Natalja A TichonovafiledCriticalIrina P Stepanova
Priority to CS831657ApriorityCriticalpatent/CS247136B1/en
Publication of CS165783A1publicationCriticalpatent/CS165783A1/en
Publication of CS247136B1publicationCriticalpatent/CS247136B1/en