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Priority to JP1969011348UpriorityCriticalpatent/JPS4728696Y1/ja
Priority to DE19702006041prioritypatent/DE2006041A1/de
Priority to FR7004985Aprioritypatent/FR2030436B1/fr
Priority to GB1297027Dprioritypatent/GB1297027A/en
Publication of JPS4728696Y1publicationCriticalpatent/JPS4728696Y1/ja