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 Aleksand R I Popov, Ljubka C StojjchevafiledCriticalAleksand R I Popov
Priority to BG8227687ApriorityCriticalpatent/BG44919A1/xx
Publication of BG44919A1publicationCriticalpatent/BG44919A1/xx