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Priority to JP1988160567UpriorityCriticalpatent/JPH0452514Y2/ja
Priority to US07/431,171prioritypatent/US5022619A/en
Publication of JPH0280245UpublicationCriticalpatent/JPH0280245U/ja
Application grantedgrantedCritical
Publication of JPH0452514Y2publicationCriticalpatent/JPH0452514Y2/ja
