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Priority to JP2131377ApriorityCriticalpatent/JPS53106221A/ja
Priority to US05/880,143prioritypatent/US4156960A/en
Priority to DE19782808259prioritypatent/DE2808259A1/de
Publication of JPS53106221ApublicationCriticalpatent/JPS53106221A/ja
Publication of JPS5752911B2publicationCriticalpatent/JPS5752911B2/ja