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Priority to JP13455472UpriorityCriticalpatent/JPS4991357U/ja
Priority to US417493Aprioritypatent/US3886725A/en
Priority to FR7341742Aprioritypatent/FR2208145B1/fr
Priority to GB5460673Aprioritypatent/GB1438314A/en
Publication of JPS4991357UpublicationCriticalpatent/JPS4991357U/ja