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Priority to JP1628188UpriorityCriticalpatent/JPH058430Y2/ja
Priority to US07/302,437prioritypatent/US4901396A/en
Publication of JPH01123171UpublicationCriticalpatent/JPH01123171U/ja
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Publication of JPH058430Y2publicationCriticalpatent/JPH058430Y2/ja