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Priority to JP1978099976UpriorityCriticalpatent/JPS623749Y2/ja
Priority to US06/056,468prioritypatent/US4247933A/en
Priority to DE2929091Aprioritypatent/DE2929091C3/de
Priority to GB7925439Aprioritypatent/GB2031619B/en
Publication of JPS5516487UpublicationCriticalpatent/JPS5516487U/ja
Application grantedgrantedCritical
Publication of JPS623749Y2publicationCriticalpatent/JPS623749Y2/ja