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Application filed by Kopalnia Wegla Kamiennego MarcfiledCriticalKopalnia Wegla Kamiennego Marc
Priority to PL24302783ApriorityCriticalpatent/PL139341B1/en
Publication of PL243027A1publicationCriticalpatent/PL243027A1/en
Publication of PL139341B1publicationCriticalpatent/PL139341B1/en