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Priority to JP47118044ApriorityCriticalpatent/JPS4977264A/ja
Priority to DE2305547Aprioritypatent/DE2305547C3/de
Priority to GB833673Aprioritypatent/GB1403664A/en
Priority to FR7306572Aprioritypatent/FR2173281B1/fr
Priority to SE7302567Aprioritypatent/SE390727B/xx
Publication of JPS4977264ApublicationCriticalpatent/JPS4977264A/ja