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Priority to JP10229075UpriorityCriticalpatent/JPS5425563Y2/ja
Priority to CA256,862Aprioritypatent/CA1042185A/en
Priority to GB30757/76Aprioritypatent/GB1521793A/en
Priority to US05/709,061prioritypatent/US4071930A/en
Publication of JPS5216462UpublicationCriticalpatent/JPS5216462U/ja
Application grantedgrantedCritical
Publication of JPS5425563Y2publicationCriticalpatent/JPS5425563Y2/ja