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 Filchev, TodorovfiledCriticalFilchev
Priority to BG8359534ApriorityCriticalpatent/BG35200A1/en
Publication of BG35200A1publicationCriticalpatent/BG35200A1/en