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Priority to JP19487284UpriorityCriticalpatent/JPS61108679U/ja
Priority to US06/777,625prioritypatent/US4673220A/en
Priority to DE19853536897prioritypatent/DE3536897A1/de
Priority to GB08525604Aprioritypatent/GB2166823B/en
Publication of JPS61108679UpublicationCriticalpatent/JPS61108679U/ja