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Priority to JP3108277UpriorityCriticalpatent/JPS53125044U/ja
Priority to GB33678Aprioritypatent/GB1567718A/en
Priority to FR7800726Aprioritypatent/FR2375702A1/fr
Priority to DE19782801079prioritypatent/DE2801079A1/de
Publication of JPS53125044UpublicationCriticalpatent/JPS53125044U/ja