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Priority to JP9284772ApriorityCriticalpatent/JPS5620370B2/ja
Priority to US397358Aprioritypatent/US3887070A/en
Priority to CA181,287Aprioritypatent/CA1008433A/en
Publication of JPS4950254ApublicationCriticalpatent/JPS4950254A/ja
Publication of JPS5620370B2publicationCriticalpatent/JPS5620370B2/ja