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Priority to JP1376088UpriorityCriticalpatent/JPH0624013Y2/ja
Priority to US07/293,779prioritypatent/US5124973A/en
Publication of JPH01121125UpublicationCriticalpatent/JPH01121125U/ja
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Publication of JPH0624013Y2publicationCriticalpatent/JPH0624013Y2/ja