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 Akad Gorniczo HutniczafiledCriticalAkad Gorniczo Hutnicza
Priority to PL19986877ApriorityCriticalpatent/PL117410B1/pl
Publication of PL199868A1publicationCriticalpatent/PL199868A1/pl
Publication of PL117410B1publicationCriticalpatent/PL117410B1/pl