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Priority to JP11064589UpriorityCriticalpatent/JPH0349378U/ja
Priority to KR2019900013777Uprioritypatent/KR940007832Y1/ko
Publication of JPH0349378UpublicationCriticalpatent/JPH0349378U/ja
Priority to US07/778,758prioritypatent/US5130560A/en
