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Priority to JP43008540ApriorityCriticalpatent/JPS4841574B1/ja
Priority to GB239969Aprioritypatent/GB1244901A/en
Priority to DE19691902034prioritypatent/DE1902034A1/de
Priority to FR6900722Aprioritypatent/FR2000379A1/fr
Publication of JPS4841574B1publicationCriticalpatent/JPS4841574B1/ja