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Priority to JP9807378UpriorityCriticalpatent/JPS5515147U/ja
Priority to GB7923531Aprioritypatent/GB2028407B/en
Priority to US06/058,385prioritypatent/US4355448A/en
Priority to DE2928828Aprioritypatent/DE2928828C2/de
Publication of JPS5515147UpublicationCriticalpatent/JPS5515147U/ja
Priority to US06/406,981prioritypatent/US4430374A/en