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Priority to JP2091572ApriorityCriticalpatent/JPS5221870B2/ja
Priority to NL7217558.Aprioritypatent/NL165334C/xx
Priority to DE2263091Aprioritypatent/DE2263091C2/de
Publication of JPS4890193ApublicationCriticalpatent/JPS4890193A/ja
Publication of JPS5221870B2publicationCriticalpatent/JPS5221870B2/ja