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Priority to JP5012669UpriorityCriticalpatent/JPS484938Y1/ja
Priority to US40654Aprioritypatent/US3670492A/en
Priority to DE19702026959prioritypatent/DE2026959A1/de
Priority to GB2587270Aprioritypatent/GB1317457A/en
Priority to FR7019633Aprioritypatent/FR2043742B1/fr
Publication of JPS484938Y1publicationCriticalpatent/JPS484938Y1/ja