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Application filed by Zaklady Elektrod Weglowych 1 MfiledCriticalZaklady Elektrod Weglowych 1 M
Priority to PL23935982ApriorityCriticalpatent/PL137061B1/en
Publication of PL239359A2publicationCriticalpatent/PL239359A2/en
Publication of PL137061B1publicationCriticalpatent/PL137061B1/en