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Priority to JP3913369ApriorityCriticalpatent/JPS5017B1/ja
Priority to US881621Aprioritypatent/US3689583A/en
Priority to GB59931/69Aprioritypatent/GB1237510A/en
Priority to FR6942539Aprioritypatent/FR2025789A1/fr
Priority to DE1961722Aprioritypatent/DE1961722C3/de
Publication of JPS5017B1publicationCriticalpatent/JPS5017B1/ja