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Priority to JP13692389UpriorityCriticalpatent/JPH087449Y2/ja
Priority to EP19900102969prioritypatent/EP0383329A3/en
Priority to KR1019900001947Aprioritypatent/KR920006973B1/ko
Priority to US07/481,194prioritypatent/US5164896A/en
Publication of JPH033013UpublicationCriticalpatent/JPH033013U/ja
Application grantedgrantedCritical
Publication of JPH087449Y2publicationCriticalpatent/JPH087449Y2/ja