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Application filed by Kopalnia Wegla Kamiennego BolefiledCriticalKopalnia Wegla Kamiennego Bole
Priority to PL23630482ApriorityCriticalpatent/PL132185B1/en
Publication of PL236304A1publicationCriticalpatent/PL236304A1/en
Publication of PL132185B1publicationCriticalpatent/PL132185B1/en