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Priority to JP3550680UpriorityCriticalpatent/JPS6210863Y2/ja
Priority to GB8103883Aprioritypatent/GB2071383B/en
Priority to US06/233,462prioritypatent/US4392564A/en
Priority to DE3104983Aprioritypatent/DE3104983C2/de
Publication of JPS56137283UpublicationCriticalpatent/JPS56137283U/ja
Application grantedgrantedCritical
Publication of JPS6210863Y2publicationCriticalpatent/JPS6210863Y2/ja