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Priority to JP1979084122UpriorityCriticalpatent/JPS6118061Y2/ja
Priority to US06/159,463prioritypatent/US4327564A/en
Priority to GB8020054Aprioritypatent/GB2052570B/en
Priority to IN865/CAL/80Aprioritypatent/IN152214B/en
Publication of JPS563290UpublicationCriticalpatent/JPS563290U/ja
Application grantedgrantedCritical
Publication of JPS6118061Y2publicationCriticalpatent/JPS6118061Y2/ja