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Priority to JP2087473ApriorityCriticalpatent/JPS49110318A/ja
Priority to US05/442,198prioritypatent/US3987485A/en
Priority to DE19742407669prioritypatent/DE2407669A1/de
Priority to GB763274Aprioritypatent/GB1468551A/en
Publication of JPS49110318ApublicationCriticalpatent/JPS49110318A/ja