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Priority to JP2028476UpriorityCriticalpatent/JPS5731318Y2/ja
Priority to US05/711,155prioritypatent/US4091702A/en
Publication of JPS52112819UpublicationCriticalpatent/JPS52112819U/ja
Application grantedgrantedCritical
Publication of JPS5731318Y2publicationCriticalpatent/JPS5731318Y2/ja