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Priority to JP3635668ApriorityCriticalpatent/JPS473235B1/ja
Priority to US739739Aprioritypatent/US3570381A/en
Priority to GB31008/68Aprioritypatent/GB1192658A/en
Priority to DE19681772768prioritypatent/DE1772768C/de
Publication of JPS473235B1publicationCriticalpatent/JPS473235B1/ja