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Priority to JP1980146576UpriorityCriticalpatent/JPS638098Y2/ja
Priority to FR8119363Aprioritypatent/FR2492153B1/fr
Priority to GB8130940Aprioritypatent/GB2086664B/en
Priority to US06/311,440prioritypatent/US4443777A/en
Publication of JPS5769219UpublicationCriticalpatent/JPS5769219U/ja
Application grantedgrantedCritical
Publication of JPS638098Y2publicationCriticalpatent/JPS638098Y2/ja