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Priority to JP1975049282UpriorityCriticalpatent/JPS554161Y2/ja
Priority to US05/678,593prioritypatent/US4065143A/en
Publication of JPS51130512UpublicationCriticalpatent/JPS51130512U/ja
Application grantedgrantedCritical
Publication of JPS554161Y2publicationCriticalpatent/JPS554161Y2/ja