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Priority to JP4287272ApriorityCriticalpatent/JPS494718A/ja
Priority to IT4898873Aprioritypatent/IT982910B/it
Priority to GB1427773Aprioritypatent/GB1422542A/en
Priority to CH422273Aprioritypatent/CH565223A5/xx
Priority to NL7304097Aprioritypatent/NL7304097A/xx
Priority to FR7310818Aprioritypatent/FR2182902B1/fr
Publication of JPS494718ApublicationCriticalpatent/JPS494718A/ja