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 Aleksand R N Chekanski, Ivan N Ivanov, Kalojan I Bedelev, Ljuben P AtanasovfiledCriticalAleksand R N Chekanski
Priority to BG8274188ApriorityCriticalpatent/BG45185A1/xx
Publication of BG45185A1publicationCriticalpatent/BG45185A1/xx