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 Ivan V Marangozov, Vladimir R Chilov, Georgi L Zheljazkov, Vasil L Tuparov, Boris I Vachkov, Stojan I Arshinkov, Kostadin N Koruchev, Nikolajj D PopovfiledCriticalIvan V Marangozov
Priority to BG8347788ApriorityCriticalpatent/BG45526A1/xx
Publication of BG45526A1publicationCriticalpatent/BG45526A1/xx