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Priority to JP1479873ApriorityCriticalpatent/JPS5538720B2/ja
Priority to GB510774Aprioritypatent/GB1464899A/en
Priority to DE19742405439prioritypatent/DE2405439A1/de
Priority to CH164574Aprioritypatent/CH587528A5/xx
Publication of JPS49105500ApublicationCriticalpatent/JPS49105500A/ja
Publication of JPS5538720B2publicationCriticalpatent/JPS5538720B2/ja