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 Alexandr D Davidjuk, Anatoly A Koshevoi, Viktor J Lapy, Vasily N FrankovfiledCriticalAlexandr D Davidjuk
Priority to DD20336478ApriorityCriticalpatent/DD136314A1/en
Publication of DD136314A1publicationCriticalpatent/DD136314A1/en