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Priority to JP1988140881UpriorityCriticalpatent/JPH0735796Y2/ja
Priority to US07/423,332prioritypatent/US4998680A/en
Publication of JPH0260653UpublicationCriticalpatent/JPH0260653U/ja
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Publication of JPH0735796Y2publicationCriticalpatent/JPH0735796Y2/ja