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Priority to JP1980034738UpriorityCriticalpatent/JPS6236085Y2/ja
Publication of JPS56137013UpublicationCriticalpatent/JPS56137013U/ja
Priority to US06/486,871prioritypatent/US4455758A/en
Application grantedgrantedCritical
Publication of JPS6236085Y2publicationCriticalpatent/JPS6236085Y2/ja