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Application filed by Warszawska Fabryka Dzwigow TrafiledCriticalWarszawska Fabryka Dzwigow Tra
Priority to PL31451296ApriorityCriticalpatent/PL178933B1/en
Publication of PL314512A1publicationCriticalpatent/PL314512A1/en
Publication of PL178933B1publicationCriticalpatent/PL178933B1/en