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Priority to JP2961972UpriorityCriticalpatent/JPS525443Y2/ja
Priority to US00305825Aprioritypatent/US3810481A/en
Publication of JPS48106610UpublicationCriticalpatent/JPS48106610U/ja
Application grantedgrantedCritical
Publication of JPS525443Y2publicationCriticalpatent/JPS525443Y2/ja