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Priority to JP1989123316UpriorityCriticalpatent/JPH0714810Y2/ja
Priority to US07/599,311prioritypatent/US5159378A/en
Publication of JPH0361509UpublicationCriticalpatent/JPH0361509U/ja
Application grantedgrantedCritical
Publication of JPH0714810Y2publicationCriticalpatent/JPH0714810Y2/ja