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Priority to JP1988150330UpriorityCriticalpatent/JPH0715764Y2/ja
Priority to US07/429,222prioritypatent/US4982895A/en
Publication of JPH0271013UpublicationCriticalpatent/JPH0271013U/ja
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Publication of JPH0715764Y2publicationCriticalpatent/JPH0715764Y2/ja