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 Serafim S Serafimov, Najjden T Lalev, Ivan N Iliev, Marija L TopchijjskafiledCriticalSerafim S Serafimov
Priority to BG7919187ApriorityCriticalpatent/BG43538A1/en
Publication of BG43538A1publicationCriticalpatent/BG43538A1/en