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Priority to JP2213974ApriorityCriticalpatent/JPS551338B2/ja
Priority to US05/551,157prioritypatent/US3982971A/en
Priority to DE2507157Aprioritypatent/DE2507157C2/de
Publication of JPS50114597ApublicationCriticalpatent/JPS50114597A/ja
Publication of JPS551338B2publicationCriticalpatent/JPS551338B2/ja