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Priority to JP4699169UpriorityCriticalpatent/JPS5023345Y1/ja
Priority to GB2437770Aprioritypatent/GB1307734A/en
Priority to DE19702024828prioritypatent/DE2024828C3/de
Priority to NL7007377Aprioritypatent/NL7007377A/xx
Priority to FR7018522Aprioritypatent/FR2043590A1/fr
Publication of JPS5023345Y1publicationCriticalpatent/JPS5023345Y1/ja