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 Vasil S Sgurev, Evgeni S Radojjkov, Pet R A Grigorov, Grozdan G Grozev, Stefan L KojjnovfiledCriticalVasil S Sgurev
Priority to BG7660286ApriorityCriticalpatent/BG42643A1/en
Publication of BG42643A1publicationCriticalpatent/BG42643A1/en