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Priority to JP958888UpriorityCriticalpatent/JPH0316317Y2/ja
Priority to US07/224,652prioritypatent/US4913494A/en
Publication of JPH01115300UpublicationCriticalpatent/JPH01115300U/ja
Application grantedgrantedCritical
Publication of JPH0316317Y2publicationCriticalpatent/JPH0316317Y2/ja