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Priority to JP16778675UpriorityCriticalpatent/JPS5279926U/ja
Priority to US05/748,137prioritypatent/US4088847A/en
Priority to GB51207/76Aprioritypatent/GB1550005A/en
Priority to DE2656135Aprioritypatent/DE2656135C3/de
Publication of JPS5279926UpublicationCriticalpatent/JPS5279926U/ja