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Priority to JP4255983UpriorityCriticalpatent/JPS59147664U/ja
Priority to US06/591,005prioritypatent/US4667568A/en
Priority to GB08407585Aprioritypatent/GB2138521B/en
Publication of JPS59147664UpublicationCriticalpatent/JPS59147664U/ja
Application grantedgrantedCritical
Publication of JPS639476Y2publicationCriticalpatent/JPS639476Y2/ja