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 Szkla I Ceramiki OddzialfiledCriticalInst Szkla I Ceramiki Oddzial
Priority to PL28103989ApriorityCriticalpatent/PL161889B1/en
Publication of PL281039A1publicationCriticalpatent/PL281039A1/en
Publication of PL161889B1publicationCriticalpatent/PL161889B1/en