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Priority to JP17658986UpriorityCriticalpatent/JPS6382347U/ja
Priority to DE3739051Aprioritypatent/DE3739051C2/de
Priority to GB8727017Aprioritypatent/GB2197759B/en
Priority to US07/122,694prioritypatent/US4800358A/en
Publication of JPS6382347UpublicationCriticalpatent/JPS6382347U/ja