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Priority to JP4129771ApriorityCriticalpatent/JPS5519936B1/ja
Priority to DE2152328Aprioritypatent/DE2152328C3/de
Priority to GB4881171Aprioritypatent/GB1376151A/en
Priority to IT30111/71Aprioritypatent/IT942088B/it
Publication of JPS5519936B1publicationCriticalpatent/JPS5519936B1/ja