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Priority to JP1988101974UpriorityCriticalpatent/JPH0228914U/ja
Priority to US07/385,125prioritypatent/US5030085A/en
Priority to NL8901939Aprioritypatent/NL195033B/nl
Priority to KR1019890010719Aprioritypatent/KR940000831B1/ko
Priority to DE3925015Aprioritypatent/DE3925015C2/de
Publication of JPH0228914UpublicationCriticalpatent/JPH0228914U/ja