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 Metodi I Kovachev, Rosica C IlievafiledCriticalMetodi I Kovachev
Priority to BG8329988ApriorityCriticalpatent/BG45522A1/xx
Publication of BG45522A1publicationCriticalpatent/BG45522A1/xx