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Priority to JP122868ApriorityCriticalpatent/JPS4821374B1/ja
Priority to US738281Aprioritypatent/US3570635A/en
Priority to DE19681780003prioritypatent/DE1780003C/de
Priority to FR1592141Dprioritypatent/FR1592141A/fr
Priority to GB1250216Dprioritypatent/GB1250216A/en
Publication of JPS4821374B1publicationCriticalpatent/JPS4821374B1/ja