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 Zhivko N Zhekov, Sofija N Georgieva, Violeta I MakendzhijjskafiledCriticalZhivko N Zhekov
Priority to BG7810387ApriorityCriticalpatent/BG43629A1/en
Publication of BG43629A1publicationCriticalpatent/BG43629A1/en