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Priority to JP4255783UpriorityCriticalpatent/JPS59147662U/ja
Priority to US06/591,005prioritypatent/US4667568A/en
Priority to GB08407585Aprioritypatent/GB2138521B/en
Publication of JPS59147662UpublicationCriticalpatent/JPS59147662U/ja
Application grantedgrantedCritical
Publication of JPS6310371Y2publicationCriticalpatent/JPS6310371Y2/ja