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 PL28802490ApriorityCriticalpatent/PL163475B1/en
Publication of PL288024A1publicationCriticalpatent/PL288024A1/en
Publication of PL163475B1publicationCriticalpatent/PL163475B1/en