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 Szilikat Koezponti Kutato Es TfiledCriticalSzilikat Koezponti Kutato Es T
Priority to CS422879ApriorityCriticalpatent/CS222164B2/en
Publication of CS222164B2publicationCriticalpatent/CS222164B2/en