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Priority to JP741772ApriorityCriticalpatent/JPS4877494A/ja
Priority to DE19732301669prioritypatent/DE2301669A1/de
Priority to DD16828773Aprioritypatent/DD103841A1/xx
Priority to GB269973Aprioritypatent/GB1373471A/en
Priority to SE7300685Aprioritypatent/SE398993B/xx
Publication of JPS4877494ApublicationCriticalpatent/JPS4877494A/ja