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Application filed by Dyrekcja Okregu Poczty I TelekfiledCriticalDyrekcja Okregu Poczty I Telek
Priority to PL23938182ApriorityCriticalpatent/PL130186B2/en
Publication of PL239381A2publicationCriticalpatent/PL239381A2/en
Publication of PL130186B2publicationCriticalpatent/PL130186B2/en