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Priority to JP16983578UpriorityCriticalpatent/JPS5585931U/ja
Priority to GB7941110Aprioritypatent/GB2037914B/en
Priority to US06/100,875prioritypatent/US4275614A/en
Priority to DE2949354Aprioritypatent/DE2949354C2/de
Publication of JPS5585931UpublicationCriticalpatent/JPS5585931U/ja