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Priority to JP1320174ApriorityCriticalpatent/JPS572594B2/ja
Priority to US05/540,589prioritypatent/US3957154A/en
Priority to DE2503161Aprioritypatent/DE2503161C2/de
Publication of JPS50108085ApublicationCriticalpatent/JPS50108085A/ja
Publication of JPS572594B2publicationCriticalpatent/JPS572594B2/ja