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Priority to JP1985190167UpriorityCriticalpatent/JPH0410675Y2/ja
Priority to US06/939,346prioritypatent/US4746557A/en
Publication of JPS6296827UpublicationCriticalpatent/JPS6296827U/ja
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Publication of JPH0410675Y2publicationCriticalpatent/JPH0410675Y2/ja