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Priority to JP11337372ApriorityCriticalpatent/JPS4971820A/ja
Priority to DE2355872Aprioritypatent/DE2355872C3/de
Priority to GB5222473Aprioritypatent/GB1450212A/en
Priority to US05/414,792prioritypatent/US3953765A/en
Publication of JPS4971820ApublicationCriticalpatent/JPS4971820A/ja