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Priority to JP689374ApriorityCriticalpatent/JPS50103337A/ja
Priority to US05/537,642prioritypatent/US4033685A/en
Priority to DE19752500474prioritypatent/DE2500474A1/de
Priority to FR7500709Aprioritypatent/FR2257923B1/fr
Publication of JPS50103337ApublicationCriticalpatent/JPS50103337A/ja