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Priority to JP576287UpriorityCriticalpatent/JPH0447447Y2/ja
Priority to US07/124,883prioritypatent/US4799806A/en
Publication of JPS63115920UpublicationCriticalpatent/JPS63115920U/ja
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Publication of JPH0447447Y2publicationCriticalpatent/JPH0447447Y2/ja