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Priority to JP10486980UpriorityCriticalpatent/JPS646521Y2/ja
Priority to US06/286,041prioritypatent/US4412736A/en
Priority to DE19813129291prioritypatent/DE3129291A1/de
Publication of JPS5728461UpublicationCriticalpatent/JPS5728461U/ja
Application grantedgrantedCritical
Publication of JPS646521Y2publicationCriticalpatent/JPS646521Y2/ja