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Priority to JP13276988UpriorityCriticalpatent/JPH056626Y2/ja
Priority to US07/414,231prioritypatent/US4969611A/en
Publication of JPH0255470UpublicationCriticalpatent/JPH0255470U/ja
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Publication of JPH056626Y2publicationCriticalpatent/JPH056626Y2/ja