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Priority to JP7939975UpriorityCriticalpatent/JPS5239352Y2/ja
Priority to US05/737,017prioritypatent/US4094313A/en
Publication of JPS51159497UpublicationCriticalpatent/JPS51159497U/ja
Application grantedgrantedCritical
Publication of JPS5239352Y2publicationCriticalpatent/JPS5239352Y2/ja