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Application filed by Kopalnia Wegla Kamiennego HalefiledCriticalKopalnia Wegla Kamiennego Hale
Priority to PL25034884ApriorityCriticalpatent/PL141992B1/en
Publication of PL250348A1publicationCriticalpatent/PL250348A1/en
Publication of PL141992B1publicationCriticalpatent/PL141992B1/en