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Priority to JP13973ApriorityCriticalpatent/JPS527561B2/ja
Priority to US379561Aprioritypatent/US3871268A/en
Priority to GB3572773Aprioritypatent/GB1438563A/en
Priority to DE2342060Aprioritypatent/DE2342060C3/de
Publication of JPS4989901ApublicationCriticalpatent/JPS4989901A/ja
Publication of JPS527561B2publicationCriticalpatent/JPS527561B2/ja