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Application filed by Kopalnia Wegla Kamiennego PowsfiledCriticalKopalnia Wegla Kamiennego Pows
Priority to PL19689577ApriorityCriticalpatent/PL105896B1/en
Publication of PL196895A1publicationCriticalpatent/PL196895A1/en
Publication of PL105896B1publicationCriticalpatent/PL105896B1/en