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Priority to JP12080375UpriorityCriticalpatent/JPS5234423U/ja
Priority to GB3281476Aprioritypatent/GB1534603A/en
Priority to US05/715,347prioritypatent/US4080982A/en
Priority to DE19762638141prioritypatent/DE2638141A1/de
Priority to FR7626949Aprioritypatent/FR2323076A1/fr
Publication of JPS5234423UpublicationCriticalpatent/JPS5234423U/ja