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Priority to JP19073382UpriorityCriticalpatent/JPS5994432U/ja
Priority to US06/561,864prioritypatent/US4566344A/en
Publication of JPS5994432UpublicationCriticalpatent/JPS5994432U/ja
Application grantedgrantedCritical
Publication of JPS6348986Y2publicationCriticalpatent/JPS6348986Y2/ja