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Priority to JP1989043191UpriorityCriticalpatent/JPH02134549U/ja
Priority to US07/454,459prioritypatent/US5119139A/en
Priority to EP89313545Aprioritypatent/EP0377315B1/en
Priority to DE68914126Tprioritypatent/DE68914126T2/de
Priority to KR1019900000026Aprioritypatent/KR930005971B1/ko
Publication of JPH02134549UpublicationCriticalpatent/JPH02134549U/ja