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Priority to JP13871389UpriorityCriticalpatent/JP2501712Y2/ja
Priority to US07/619,942prioritypatent/US5150087A/en
Publication of JPH0377502UpublicationCriticalpatent/JPH0377502U/ja
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Publication of JP2501712Y2publicationCriticalpatent/JP2501712Y2/ja