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Priority to JP3230172UpriorityCriticalpatent/JPS5249353Y2/ja
Priority to US00278823Aprioritypatent/US3789723A/en
Publication of JPS48109870UpublicationCriticalpatent/JPS48109870U/ja
Application grantedgrantedCritical
Publication of JPS5249353Y2publicationCriticalpatent/JPS5249353Y2/ja