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Priority to JP2575670ApriorityCriticalpatent/JPS4928408B1/ja
Priority to DE2115116Aprioritypatent/DE2115116C3/de
Priority to FR7110555Aprioritypatent/FR2083622B1/fr
Priority to CH445071Aprioritypatent/CH562614A5/xx
Priority to GB1296007Dprioritypatent/GB1296007A/en
Publication of JPS4928408B1publicationCriticalpatent/JPS4928408B1/ja