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 Angel I Angelov, Asen D VergovfiledCriticalAngel I Angelov
Priority to BG8190187ApriorityCriticalpatent/BG44809A1/xx
Publication of BG44809A1publicationCriticalpatent/BG44809A1/xx