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Priority to JP2613675UpriorityCriticalpatent/JPS51106912U/ja
Priority to US05/653,953prioritypatent/US4050855A/en
Priority to GB6475/76Aprioritypatent/GB1515635A/en
Priority to DE2607444Aprioritypatent/DE2607444C2/de
Publication of JPS51106912UpublicationCriticalpatent/JPS51106912U/ja