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Priority to JP1976142849UpriorityCriticalpatent/JPS5739170Y2/ja
Priority to US05/779,836prioritypatent/US4074425A/en
Publication of JPS5360198UpublicationCriticalpatent/JPS5360198U/ja
Application grantedgrantedCritical
Publication of JPS5739170Y2publicationCriticalpatent/JPS5739170Y2/ja