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Priority to JP1986183662UpriorityCriticalpatent/JPH0415580Y2/ja
Priority to US07/126,151prioritypatent/US4826238A/en
Publication of JPS6389388UpublicationCriticalpatent/JPS6389388U/ja
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Publication of JPH0415580Y2publicationCriticalpatent/JPH0415580Y2/ja