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Priority to JP1991064675UpriorityCriticalpatent/JP2602380Y2/ja
Priority to DE4223104Aprioritypatent/DE4223104C2/de
Priority to KR1019920012756Aprioritypatent/KR960005702B1/ko
Publication of JPH0489097UpublicationCriticalpatent/JPH0489097U/ja
Priority to US08/201,479prioritypatent/US5987656A/en
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Publication of JP2602380Y2publicationCriticalpatent/JP2602380Y2/ja