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Priority to JP1387277ApriorityCriticalpatent/JPS53102337A/ja
Priority to GB1158077Aprioritypatent/GB1528715A/en
Priority to DE19772714138prioritypatent/DE2714138C3/de
Publication of JPS53102337ApublicationCriticalpatent/JPS53102337A/ja
Publication of JPS5421372B2publicationCriticalpatent/JPS5421372B2/ja