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Priority to JP4978869UpriorityCriticalpatent/JPS4810857Y1/ja
Priority to US39354Aprioritypatent/US3609732A/en
Priority to DE2025770Aprioritypatent/DE2025770C3/de
Priority to FR7019544Aprioritypatent/FR2050400A1/fr
Publication of JPS4810857Y1publicationCriticalpatent/JPS4810857Y1/ja