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 filedfiledCritical
Priority to DD18828375ApriorityCriticalpatent/DD121861A1/xx
Priority to HU76FE00000971Aprioritypatent/HU171892B/hu
Publication of DD121861A1publicationCriticalpatent/DD121861A1/xx