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Priority to JP1988050276UpriorityCriticalpatent/JPH01152065U/ja
Priority to KR1019890003160Aprioritypatent/KR930011873B1/ko
Priority to US07/337,789prioritypatent/US4941366A/en
Publication of JPH01152065UpublicationCriticalpatent/JPH01152065U/ja
