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Priority to HUEE002309priorityCriticalpatent/HU169523B/hu
Priority to JP1088776Aprioritypatent/JPS51101940A/ja
Priority to GB477476Aprioritypatent/GB1534034A/en
Priority to DE19762604698prioritypatent/DE2604698A1/de
Publication of HU169523BpublicationCriticalpatent/HU169523B/hu