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Priority to JP1988153020UpriorityCriticalpatent/JPH0631227Y2/ja
Priority to US07/427,389prioritypatent/US4967892A/en
Publication of JPH0272819UpublicationCriticalpatent/JPH0272819U/ja
Application grantedgrantedCritical
Publication of JPH0631227Y2publicationCriticalpatent/JPH0631227Y2/ja
