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Priority to JP5004372UpriorityCriticalpatent/JPS522228Y2/ja
Priority to US00346321Aprioritypatent/US3850259A/en
Publication of JPS498976UpublicationCriticalpatent/JPS498976U/ja
Application grantedgrantedCritical
Publication of JPS522228Y2publicationCriticalpatent/JPS522228Y2/ja