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Application filed by Kopalnia Wegla Kamiennego BoryfiledCriticalKopalnia Wegla Kamiennego Bory
Priority to PL25550985ApriorityCriticalpatent/PL142405B1/en
Publication of PL255509A1publicationCriticalpatent/PL255509A1/en
Publication of PL142405B1publicationCriticalpatent/PL142405B1/en