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Priority to JP44049369ApriorityCriticalpatent/JPS507917B1/ja
Priority to US49006Aprioritypatent/US3668473A/en
Priority to GB30633/70Aprioritypatent/GB1273464A/en
Priority to DE19702031324prioritypatent/DE2031324A1/de
Priority to NL7009239Aprioritypatent/NL7009239A/xx
Publication of JPS507917B1publicationCriticalpatent/JPS507917B1/ja