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 Zakharieva, Rachev, GeshevafiledCriticalZakharieva
Priority to BG8151191ApriorityCriticalpatent/BG32647A1/en
Priority to DD23772782Aprioritypatent/DD208172A1/en
Publication of BG32647A1publicationCriticalpatent/BG32647A1/en