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Priority to JP7048985UpriorityCriticalpatent/JPH0641167Y2/ja
Priority to DE19863615960prioritypatent/DE3615960A1/de
Priority to US06/862,718prioritypatent/US4712419A/en
Publication of JPS61187453UpublicationCriticalpatent/JPS61187453U/ja
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Publication of JPH0641167Y2publicationCriticalpatent/JPH0641167Y2/ja