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Priority to PL20780278ApriorityCriticalpatent/PL118020B1/pl
Publication of PL207802A1publicationCriticalpatent/PL207802A1/pl
Publication of PL118020B1publicationCriticalpatent/PL118020B1/pl
PL20780278A1978-06-201978-06-20Electric power transformer station with transformer unit mounted in a pits zaglublennym v zemlju transformatorom
PL118020B1
(en)