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Priority to JP1976097104UpriorityCriticalpatent/JPS5619437Y2/ja
Priority to US05/782,779prioritypatent/US4118704A/en
Priority to GB13757/77Aprioritypatent/GB1574247A/en
Priority to DE2715823Aprioritypatent/DE2715823C3/de
Publication of JPS5315708UpublicationCriticalpatent/JPS5315708U/ja
Application grantedgrantedCritical
Publication of JPS5619437Y2publicationCriticalpatent/JPS5619437Y2/ja