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Application filed by Kopalnia Wegla Kamiennego StasfiledCriticalKopalnia Wegla Kamiennego Stas
Priority to PL24457183ApriorityCriticalpatent/PL141732B1/en
Publication of PL244571A1publicationCriticalpatent/PL244571A1/en
Publication of PL141732B1publicationCriticalpatent/PL141732B1/en