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 Boris P Dodonov, Naum J KaganfiledCriticalBoris P Dodonov
Priority to CS402678ApriorityCriticalpatent/CS194879B1/en
Publication of CS194879B1publicationCriticalpatent/CS194879B1/en