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Priority to JP7825290UpriorityCriticalpatent/JP2503802Y2/ja
Priority to DE4114153Aprioritypatent/DE4114153C2/de
Priority to KR1019910009063Aprioritypatent/KR940009335B1/ko
Publication of JPH0439546UpublicationCriticalpatent/JPH0439546U/ja
Priority to US07/938,685prioritypatent/US5228498A/en
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Publication of JP2503802Y2publicationCriticalpatent/JP2503802Y2/ja