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Priority to JP12722072UpriorityCriticalpatent/JPS5225310Y2/ja
Priority to US412949Aprioritypatent/US3885811A/en
Publication of JPS4976884UpublicationCriticalpatent/JPS4976884U/ja
Application grantedgrantedCritical
Publication of JPS5225310Y2publicationCriticalpatent/JPS5225310Y2/ja
