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Priority to JP2070876UpriorityCriticalpatent/JPS539286Y2/ja
Priority to US05/731,666prioritypatent/US4101133A/en
Publication of JPS52113605UpublicationCriticalpatent/JPS52113605U/ja
Application grantedgrantedCritical
Publication of JPS539286Y2publicationCriticalpatent/JPS539286Y2/ja