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Priority to JP1985059937UpriorityCriticalpatent/JPH0613443Y2/ja
Priority to US06/840,442prioritypatent/US4744659A/en
Publication of JPS61176425UpublicationCriticalpatent/JPS61176425U/ja
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Publication of JPH0613443Y2publicationCriticalpatent/JPH0613443Y2/ja