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Priority to JP6255273UpriorityCriticalpatent/JPS5415545Y2/ja
Priority to US472211Aprioritypatent/US3916097A/en
Publication of JPS5011412UpublicationCriticalpatent/JPS5011412U/ja
Application grantedgrantedCritical
Publication of JPS5415545Y2publicationCriticalpatent/JPS5415545Y2/ja