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Priority to JP1987079393UpriorityCriticalpatent/JPH0719445Y2/ja
Priority to US07/107,946prioritypatent/US4809679A/en
Publication of JPS63188001UpublicationCriticalpatent/JPS63188001U/ja
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Publication of JPH0719445Y2publicationCriticalpatent/JPH0719445Y2/ja