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Priority to JP48039335ApriorityCriticalpatent/JPS49127693A/ja
Priority to GB1470974Aprioritypatent/GB1456425A/en
Priority to DE19742416537prioritypatent/DE2416537C3/de
Priority to FR7412163Aprioritypatent/FR2224816B1/fr
Publication of JPS49127693ApublicationCriticalpatent/JPS49127693A/ja
Priority to US05/630,887prioritypatent/US4007358A/en