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Application filed by Kopalnia Wegla Kamiennego SlasfiledCriticalKopalnia Wegla Kamiennego Slas
Priority to PL21089678ApriorityCriticalpatent/PL114982B2/xx
Publication of PL210896A1publicationCriticalpatent/PL210896A1/pl
Publication of PL114982B2publicationCriticalpatent/PL114982B2/xx