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 Wyzsza Szkola Ped Im Jana KochfiledCriticalWyzsza Szkola Ped Im Jana Koch
Priority to PL95310664ApriorityCriticalpatent/PL180975B1/en
Publication of PL310664A1publicationCriticalpatent/PL310664A1/en
Publication of PL180975B1publicationCriticalpatent/PL180975B1/en