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Priority to JP1975118272UpriorityCriticalpatent/JPS5519097Y2/ja
Priority to US05/717,460prioritypatent/US4085364A/en
Publication of JPS5233210UpublicationCriticalpatent/JPS5233210U/ja
Application grantedgrantedCritical
Publication of JPS5519097Y2publicationCriticalpatent/JPS5519097Y2/ja