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
Priority claimed from SU894737592Aexternal-prioritypatent/RU1837380C/ru
Application filed by Inst Cercetari StiintificefiledCriticalInst Cercetari Stiintifice
Priority to MD96-0365ApriorityCriticalpatent/MD720C2/ro
Publication of MD720B1publicationCriticalpatent/MD720B1/ro
Publication of MD720C2publicationCriticalpatent/MD720C2/ro