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Application filed by Bobrek Kopalnia Wegla KamiennefiledCriticalBobrek Kopalnia Wegla Kamienne
Priority to PL28257589ApriorityCriticalpatent/PL161733B1/en
Publication of PL282575A1publicationCriticalpatent/PL282575A1/en
Publication of PL161733B1publicationCriticalpatent/PL161733B1/en