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Priority to JP6646181UpriorityCriticalpatent/JPS6113432Y2/ja
Priority to GB8212320Aprioritypatent/GB2098138B/en
Priority to AU83138/82Aprioritypatent/AU546168B2/en
Priority to US06/374,242prioritypatent/US4481898A/en
Publication of JPS57177894UpublicationCriticalpatent/JPS57177894U/ja
Application grantedgrantedCritical
Publication of JPS6113432Y2publicationCriticalpatent/JPS6113432Y2/ja