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Priority to JP1989056170UpriorityCriticalpatent/JP2503626Y2/ja
Priority to US07/448,272prioritypatent/US5015979A/en
Publication of JPH02146740UpublicationCriticalpatent/JPH02146740U/ja
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Publication of JP2503626Y2publicationCriticalpatent/JP2503626Y2/ja
