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Priority to JP7980073UpriorityCriticalpatent/JPS5027866U/ja
Priority to US417493Aprioritypatent/US3886725A/en
Priority to FR7341742Aprioritypatent/FR2208145B1/fr
Priority to GB5460673Aprioritypatent/GB1438314A/en
Publication of JPS5027866UpublicationCriticalpatent/JPS5027866U/ja