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 Vyzk Ustav PozemnichfiledCriticalVyzk Ustav Pozemnich
Priority to YU80687ApriorityCriticalpatent/YU80687A/en
Publication of YU80687ApublicationCriticalpatent/YU80687A/en