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Priority to JP16820775UpriorityCriticalpatent/JPS5280643U/ja
Priority to DE19762654259prioritypatent/DE2654259B2/de
Priority to GB5043276Aprioritypatent/GB1564712A/en
Priority to FR7636818Aprioritypatent/FR2334975A1/fr
Publication of JPS5280643UpublicationCriticalpatent/JPS5280643U/ja