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Priority to JP13124988UpriorityCriticalpatent/JPH0643455Y2/ja
Priority to US07/412,926prioritypatent/US5029668A/en
Publication of JPH0252923UpublicationCriticalpatent/JPH0252923U/ja
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Publication of JPH0643455Y2publicationCriticalpatent/JPH0643455Y2/ja