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 Dyrekcja Okregu Poczty I TelekfiledCriticalDyrekcja Okregu Poczty I Telek
Priority to PL19801777ApriorityCriticalpatent/PL198017A1/pl
Publication of PL198017A1publicationCriticalpatent/PL198017A1/pl