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Priority to JP5232476UpriorityCriticalpatent/JPS5731332Y2/ja
Priority to US05/762,558prioritypatent/US4079651A/en
Publication of JPS52143926UpublicationCriticalpatent/JPS52143926U/ja
Application grantedgrantedCritical
Publication of JPS5731332Y2publicationCriticalpatent/JPS5731332Y2/ja