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Priority to JP47018359ApriorityCriticalpatent/JPS5115972B2/ja
Priority to US00318962Aprioritypatent/US3844379A/en
Priority to GB5982172Aprioritypatent/GB1420085A/en
Publication of JPS4897520ApublicationCriticalpatent/JPS4897520A/ja
Publication of JPS5115972B2publicationCriticalpatent/JPS5115972B2/ja