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Priority to JP5450971ApriorityCriticalpatent/JPS528530B1/ja
Priority to DE19722235671prioritypatent/DE2235671C3/de
Priority to FR7226173Aprioritypatent/FR2146846A5/fr
Priority to IT2720572Aprioritypatent/IT969322B/it
Priority to DE19722264688prioritypatent/DE2264688C3/de
Publication of JPS528530B1publicationCriticalpatent/JPS528530B1/ja