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Application filed by Kopalnia Wegla Kamiennego RozbfiledCriticalKopalnia Wegla Kamiennego Rozb
Priority to PL19750877ApriorityCriticalpatent/PL104166B1/pl
Publication of PL197508A1publicationCriticalpatent/PL197508A1/pl
Publication of PL104166B1publicationCriticalpatent/PL104166B1/pl