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Priority to JP11294775UpriorityCriticalpatent/JPS5226173U/ja
Priority to US05/714,399prioritypatent/US4092624A/en
Publication of JPS5226173UpublicationCriticalpatent/JPS5226173U/ja
Priority to DE19772719446prioritypatent/DE2719446A1/de
Priority to GB19669/77Aprioritypatent/GB1557131A/en