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 Inst Tech Material ElektfiledCriticalInst Tech Material Elekt
Priority to PL25226385ApriorityCriticalpatent/PL146879B1/en
Publication of PL252263A1publicationCriticalpatent/PL252263A1/en
Publication of PL146879B1publicationCriticalpatent/PL146879B1/en