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Priority to JP1977098186UpriorityCriticalpatent/JPS5613108Y2/ja
Priority to US05/856,184prioritypatent/US4158161A/en
Publication of JPS5425227UpublicationCriticalpatent/JPS5425227U/ja
Application grantedgrantedCritical
Publication of JPS5613108Y2publicationCriticalpatent/JPS5613108Y2/ja