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Priority to JP16765375UpriorityCriticalpatent/JPS5280389U/ja
Priority to FR7632895Aprioritypatent/FR2329900A1/fr
Priority to DE19762649843prioritypatent/DE2649843C2/de
Priority to GB4535776Aprioritypatent/GB1570215A/en
Publication of JPS5280389UpublicationCriticalpatent/JPS5280389U/ja