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Priority to JP1988151555UpriorityCriticalpatent/JPH0716439Y2/ja
Priority to US07/413,678prioritypatent/US5212472A/en
Publication of JPH0299651UpublicationCriticalpatent/JPH0299651U/ja
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Publication of JPH0716439Y2publicationCriticalpatent/JPH0716439Y2/ja