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Priority to JP6253988UpriorityCriticalpatent/JPH0514124Y2/ja
Priority to US07/342,776prioritypatent/US4969583A/en
Publication of JPH01167572UpublicationCriticalpatent/JPH01167572U/ja
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Publication of JPH0514124Y2publicationCriticalpatent/JPH0514124Y2/ja