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 Mara D Petkova, Sava S Karaenev, Veselin G Ivanov, Neno M Karabelev, Vladimir G NikolovfiledCriticalMara D Petkova
Priority to BG7720086ApriorityCriticalpatent/BG42929A1/en
Publication of BG42929A1publicationCriticalpatent/BG42929A1/en